5Ghz Wifi stopped connecting - Verizon Samsung Galaxy S 4

Hi guys -
I'm having a problem with the 5Ghz Wifi on my Verizon Galaxy S4 - it just stopped connecting all of a sudden.
I've now had this problem on 2 Galaxy S4 phones. The first one, it stopped working after 5 days. The second (this one) 16 days as of last night.
(I exchanged the 1st within my 14 day return period).
No changes - no updates - just stopped randomly working on the phone - other items like my Computers and Wifi Bridge work fine with the 5Ghz.
I've read the threads where others have the same issue. Trying to connect, it won't do anything when I click on the name, try connecting and then just go back to saying "Saved, Secured", or say Authentication Error. It connects and works right next to the router, or when it has full signal, but drops if I move away from the Router. I've also tried all the suggestions in the other threads.
To ensure it wasn't the Router, I replaced it the first time around, and still had the same behavior.
What I don't understand, is that the Phone will connect fine to 2.4Ghz networks, but not 5Ghz Wifi networks. It will broadcast
and receive fine on 5Ghz for the Tethering function, so it can't be hardware-related.
I find it hard to believe 2 phones can be defective, but not outside of the realm of possibility.
Does anyone have any ideas on how to fix this, or know what exactly is causing this, and what to do?

Why not just use the 2.4ghz band? I've used that since day one.
safestrap enabled, Hyperdrive driven

Does anyone have any ideas on how to fix this, or know what exactly is causing this, and what to do?
I've had the same problem with both S4's that I have. What I did to fix it was I went into the routers settings.. I changed the 2.5 band to only show G and the 5 band to only allow N.
Then I changed the bandwidth on the 5 to 20/40 instead of just the 20 it was on.
Also I made my phone '' forget'' the low speed band so that it only had the 5.
All routers are different obviously, but you should have those settings I'd assume.
See if any of that helps.
Good luck!
Sent from my SCH-I545 using XDA Premium 4 mobile app

decaturbob,
The 2.4Ghz band here is very crowded.
Mistertac,
Tried, didn't work.
It will also say the Network is out Range 1 out of 2 times, even though I'm sitting in front of my laptop with the 5Ghz connected.
Other phone did the same thing.

chrisf8657 said:
decaturbob,
The 2.4Ghz band here is very crowded.
Mistertac,
Tried, didn't work.
It will also say the Network is out Range 1 out of 2 times, even though I'm sitting in front of my laptop with the 5Ghz connected.
Other phone did the same thing.
Click to expand...
Click to collapse
If you can connect to it close to the router do so. Download and install wifi analyzer from the play store. See what the quality of the signal is close to the router and as you move away. I haven't been on touch wiz(I'm assuming that's what you're on) in a while. You should also have settings under wifi then advanced. Make sure nothing is weird there.
Sent from my SCH-I545 using XDA Premium 4 mobile app

chrisf8657 said:
What I don't understand, is that the Phone will connect fine to 2.4Ghz networks, but not 5Ghz Wifi networks. It will broadcast
and receive fine on 5Ghz for the Tethering function, so it can't be hardware-related.
I find it hard to believe 2 phones can be defective, but not outside of the realm of possibility.
Does anyone have any ideas on how to fix this, or know what exactly is causing this, and what to do?
Click to expand...
Click to collapse
Were you ever able to find a fix for this? I have the same issue. Up until now I have just settled for 2.4, but lately this is annoying me. Thanks.

Unfortunately no. I'm wondering if kitkat will fix it...
Sent from my Galaxy S4 using Tapatalk

Did you root your phone yet? Do you have a custom rom installed on it? If you have then you might want to take a look at a file explore to look for your host file. It could be because of that. I had to delete my host file in order for my wifi to connect again. Also want to check proxy settings.

Do you have separate names for the 2.4 and 5ghz networks?
Hit thanks if I helped you out. Doing a little bit of reading goes a long way. Sent via tapatalk.

Shiwoonie said:
Did you root your phone yet? Do you have a custom rom installed on it? If you have then you might want to take a look at a file explore to look for your host file. It could be because of that. I had to delete my host file in order for my wifi to connect again. Also want to check proxy settings.
Click to expand...
Click to collapse
Thanks for the tip. Yes, customer ROM (Hyperdrive). What "host" file are you referring too? Wifi connects perfectly ever time. It is ONLY the the 5GHz band that will not stay connected.
hexitnow said:
Do you have separate names for the 2.4 and 5ghz networks?
Click to expand...
Click to collapse
Yes, different names.

bjtech said:
Thanks for the tip. Yes, customer ROM (Hyperdrive). What "host" file are you referring too? Wifi connects perfectly ever time. It is ONLY the the 5GHz band that will not stay connected.
Yes, different names.
Click to expand...
Click to collapse
This kind of sheds some light on why a lot of people are not getting good 5ghz connections..
http://uk.tp-link.com/article/?faqid=469
Verizon S4
Liquid Smooth 4.4
Sprint S4
Negalite 4.4

Mistertac said:
This kind of sheds some light on why a lot of people are not getting good 5ghz connections..
http://uk.tp-link.com/article/?faqid=469
Click to expand...
Click to collapse
Thanks. I am pretty familiar with the 5Ghz vs 2.4Ghz limitations. I have the Netgear Nighthawk AC1900 R7000 Router and all Wifi connections are being made within 50 ft of the router. So I know range is not an issue. My Note 8 connects to the 5GHz band and works perfectly. My S4 connects for a few seconds and then drops. Using Wifi Analyzer (on S4), I see the 5GHz signal for a few seconds and then it disappears for 10 seconds and then comes back. Seems like it is turning on and off continually. As mentioned previously, the two things that really make this strange are:
1) I can connect my S4 to the 2.4GHz band of the same router and it works exactly as it should
2) My Note 8 connects to the 5GHz band every time and works exactly as it should
So it is specifically my S4 that is the problem. I am thinking that something with my Hyperdrive ROM or Wanam, etc. may be causing the issue. OR maybe it is a hardware issue with the device? Either way, I can get by using 2.4 just fine, but wish I could figure out why 5GHz doesn't work.

bjtech said:
Thanks. I am pretty familiar with the 5Ghz vs 2.4Ghz limitations. I have the Netgear Nighthawk AC1900 R7000 Router and all Wifi connections are being made within 50 ft of the router. So I know range is not an issue. My Note 8 connects to the 5GHz band and works perfectly. My S4 connects for a few seconds and then drops. Using Wifi Analyzer (on S4), I see the 5GHz signal for a few seconds and then it disappears for 10 seconds and then comes back. Seems like it is turning on and off continually. As mentioned previously, the two things that really make this strange are:
1) I can connect my S4 to the 2.4GHz band of the same router and it works exactly as it should
2) My Note 8 connects to the 5GHz band every time and works exactly as it should
So it is specifically my S4 that is the problem. I am thinking that something with my Hyperdrive ROM or Wanam, etc. may be causing the issue. OR maybe it is a hardware issue with the device? Either way, I can get by using 2.4 just fine, but wish I could figure out why 5GHz doesn't work.
Click to expand...
Click to collapse
Yea that's one of them real pain in ass things you're probably going to have to look into huh?
I see where you're coming from now just figure I'd share that article. I'm not a fan of TW so I don't recall what WiFi settings you have on that s4.
Anything like this???
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Verizon S4
Liquid Smooth 4.4
Sprint S4
Negalite 4.4

Mistertac said:
Yea that's one of them real pain in ass things you're probably going to have to look into huh?
I see where you're coming from now just figure I'd share that article. I'm not a fan of TW so I don't recall what WiFi settings you have on that s4.
Anything like this???
Click to expand...
Click to collapse
Yeah, the ROM does include a "band" switcher, but when I select 5GHZ only, it has the exact same symptoms. Only difference is it no longer shows my 2.4 band as a connection option. Like you said, one of those things...haha.

bjtech said:
Yeah, the ROM does include a "band" switcher, but when I select 5GHZ only, it has the exact same symptoms. Only difference is it no longer shows my 2.4 band as a connection option. Like you said, one of those things...haha.
Click to expand...
Click to collapse
Yea when I got my ac1200 router it was nothing but a pain in the ass for me too between the 4 devices I have hooked into it's WiFi...all different ROMs..all different results. I think I was happier with the simple G router lol
Verizon S4
Liquid Smooth 4.4
&
Sprint S4
Negalite 4.4

bjtech said:
My S4 connects for a few seconds and then drops. Using Wifi Analyzer (on S4), I see the 5GHz signal for a few seconds and then it disappears for 10 seconds and then comes back. Seems like it is turning on and off continually.
Click to expand...
Click to collapse
I have the exact same behavior.
Sent from my Galaxy S4 on Verizon using Tapatalk

If you don't know what a host file is then nvm. But yeah if it's just the 5ghz and you have the issue on both phone then it's the hardware issue. I advise ( since you have two s4 right? ) you to have one stocked and one custom. Try to connect both, if both still have the same issue then contact the cell phone provider. If the custom have the issue then contact the custom rom creator.

Shiwoonie said:
If you don't know what a host file is then nvm. But yeah if it's just the 5ghz and you have the issue on both phone then it's the hardware issue. I advise ( since you have two s4 right? ) you to have one stocked and on custom. Try to connect both, if both still have the same issue then contact the cell phone provider. If the custom have the issue then contact the custom rom creator.
Click to expand...
Click to collapse
I just checked on my MK2 (stock) phone and it sees the 5 GHz wifi fine. I changed the SSID of the 2.4 Gig network and it remained connected on 5 GHz. My Galaxy Tab 2 lost connectivity due to the renaming, so I know it worked (and that the GS4 still was connected on 5 Gigs). Oh, and the wife's iPad lost connectivity. Oops.
If you install WiFiFoFum you should be able to see both bands.

chrisf8657 said:
I have the exact same behavior.
Sent from my Galaxy S4 on Verizon using Tapatalk
Click to expand...
Click to collapse
Did you ever get this resolved?
I have the same issues on my S4.

Nope. Stuck on 2.4ghz. Guess I'll have to wait for another phone…
Sent from my Galaxy S4 on Verizon using Tapatalk

Related

[Q] Atrix doesn't detect 5GHz 802.11n network. What do?

So my Atrix can detect the n-network when the channel is set to ~2Ghz, but it won't detect the 5GHz one. Isn't the frequency of the channel what makes the n-network special?
I believe that the only advange 5GHz has over 2.4GHz, is that the 2.4GHz space is more crowded, but as long as you don't suffer from interference there, you should be fine.
txtsd said:
So my Atrix can detect the n-network when the channel is set to ~2Ghz, but it won't detect the 5GHz one. Isn't the frequency of the channel what makes the n-network special?
Click to expand...
Click to collapse
It does detect 5GHz but it's weak when it's too away from the router far compare to 2.4 GHz.
Jim_R said:
I believe that the only advange 5GHz has over 2.4GHz, is that the 2.4GHz space is more crowded, but as long as you don't suffer from interference there, you should be fine.
Click to expand...
Click to collapse
That's the problem. Where I'm situated there's at least 1 wireless network in every single channel.
squarejp said:
It does detect 5GHz but it's weak when it's too away from the router far compare to 2.4 GHz.
Click to expand...
Click to collapse
I'm only 3 meters and 1 wall away from my router.
txtsd said:
That's the problem. Where I'm situated there's at least 1 wireless network in every single channel.
I'm only 3 meters and 1 wall away from my router.
Click to expand...
Click to collapse
I think Atrix's Wifi isn't strong.
squarejp said:
I think Atrix's Wifi isn't strong.
Click to expand...
Click to collapse
The 5 GHz freq does not have the range or penetration of 2.4 GHz.
I got the same problem. My router has dual broadcast of N and G. The phone sees N when I'm in the same room as the router but nowhere else. The G works fine everywhere.
squarejp said:
I think Atrix's Wifi isn't strong.
Click to expand...
Click to collapse
done12many2 said:
The 5 GHz freq does not have the range or penetration of 2.4 GHz.
Click to expand...
Click to collapse
ah crap
kent c said:
I got the same problem. My router has dual broadcast of N and G. The phone sees N when I'm in the same room as the router but nowhere else. The G works fine everywhere.
Click to expand...
Click to collapse
The problem is, I can connect to the 2GHz N network, not the 5.
really? I try connecting it to my wrt610n at 5hz and it seems fast and very snappy
@txtsd - what sort of router are you using? Can you not see the network at all when it's set to 5GHz broadcast?
The frequency isn't so much what makes N "special" as 802.11A was also in the 5GHz band. What makes it special is the multipath used to increase signal reception (normally multipath is a bad thing in RF).
phobos512 said:
@txtsd - what sort of router are you using? Can you not see the network at all when it's set to 5GHz broadcast?
The frequency isn't so much what makes N "special" as 802.11A was also in the 5GHz band. What makes it special is the multipath used to increase signal reception (normally multipath is a bad thing in RF).
Click to expand...
Click to collapse
I'm using a Netgear WNDR3300, with dd-wrt on it. I can access the 5GHz network with my laptop, so I know it's functioning.
txtsd said:
I'm using a Netgear WNDR3300, with dd-wrt on it. I can access the 5GHz network with my laptop, so I know it's functioning.
Click to expand...
Click to collapse
I have the same router with DD-WRT and the same problem. I have switched to a 2.4ghz network and back to 5ghz and it works properly until I disconnect.
bumoftheday31 said:
I have the same router with DD-WRT and the same problem. I have switched to a 2.4ghz network and back to 5ghz and it works properly until I disconnect.
Click to expand...
Click to collapse
With regards to DD-WRT or router compatibility with Atrix, if I'm connected to my Asus RT-N16 running dd-wrt @ 2.4GHz N, phone frequently loses the connection, but if I use my pocket router (Linksys WRT54GS, running stock firmware) connection is rock solid.
So I think Atrix simply does not "like" some of the wi-fi routers out there, or maybe it does not like fat channels (40Mhz wide channels on N for 300mbit connections), or it is too susceptible to interference.
I have been using the 5ghz band via Netgear's WNDR37AV Dual Band Gigabit Wireless gaming & Video router for a week now w/o issue. The only thing I have noticed is sometimes my Market says, timed out retry? I experienced the same message during testing on the 2.4ghz band, and I have experienced the same message on Att's data network. (?.I think its a problem with the Atrix's soft/firmware.?) I am not exactly sure what all the different settings do, but I am learning. If you have a particular question about my 5ghz settings that could help get yours up and running, I will check what I have and report back an answer..
WiredPirate said:
I have been using the 5ghz band via Netgear's WNDR37AV Dual Band Gigabit Wireless gaming & Video router for a week now w/o issue. The only thing I have noticed is sometimes my Market says, timed out retry? I experienced the same message during testing on the 2.4ghz band, and I have experienced the same message on Att's data network. (?.I think its a problem with the Atrix's soft/firmware.?) I am not exactly sure what all the different settings do, but I am learning. If you have a particular question about my 5ghz settings that could help get yours up and running, I will check what I have and report back an answer..
Click to expand...
Click to collapse
What security settings are you running? I'm running WPA2
bumoftheday31 said:
What security settings are you running? I'm running WPA2
Click to expand...
Click to collapse
WPA2 PSK (AES)
At first I had selected something different and my router advised me to change to AES for better performance, so I did.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Heres a link to the screenshot if it isnt diplaying correctly: http://goo.gl/VUWhi
Would like to point out I had to junk my 3300 because it wouldn't work with my Atrix or my N USB dongle attached to the desktop upstairs. That router sucks for the 5Ghz band, even with dd-wrt.
Bought an Asus RT-n56u and it works perfectly even across the street from my house.
bumoftheday31 said:
I have the same router with DD-WRT and the same problem. I have switched to a 2.4ghz network and back to 5ghz and it works properly until I disconnect.
Click to expand...
Click to collapse
I tried going back and forth but it doesn't even see the 5GHz network.
fincan said:
With regards to DD-WRT or router compatibility with Atrix, if I'm connected to my Asus RT-N16 running dd-wrt @ 2.4GHz N, phone frequently loses the connection, but if I use my pocket router (Linksys WRT54GS, running stock firmware) connection is rock solid.
So I think Atrix simply does not "like" some of the wi-fi routers out there, or maybe it does not like fat channels (40Mhz wide channels on N for 300mbit connections), or it is too susceptible to interference.
Click to expand...
Click to collapse
I tried the 20Mhz and 40Mhz both, it didn't see either.
WiredPirate said:
I have been using the 5ghz band via Netgear's WNDR37AV Dual Band Gigabit Wireless gaming & Video router for a week now w/o issue. The only thing I have noticed is sometimes my Market says, timed out retry? I experienced the same message during testing on the 2.4ghz band, and I have experienced the same message on Att's data network. (?.I think its a problem with the Atrix's soft/firmware.?) I am not exactly sure what all the different settings do, but I am learning. If you have a particular question about my 5ghz settings that could help get yours up and running, I will check what I have and report back an answer..
Click to expand...
Click to collapse
Yea it's an Atrix issue. It should be fixed in the upcoming update.
bumoftheday31 said:
What security settings are you running? I'm running WPA2
Click to expand...
Click to collapse
WPA2 personal + AES
mrmyth said:
Would like to point out I had to junk my 3300 because it wouldn't work with my Atrix or my N USB dongle attached to the desktop upstairs. That router sucks for the 5Ghz band, even with dd-wrt.
Bought an Asus RT-n56u and it works perfectly even across the street from my house.
Click to expand...
Click to collapse
I hope I don't have to buy a new one. I don't have the receipt to return this one.
It is not uncommon for certain hardware to be incompatible with certain other hardware when it comes to networking. The "draft" nature of "N" for so long caused and is still causing many issues.
Have any of you guys tried reflashing your router with stock firmware and trying it out? I don't unfortunately have a router that's capable of DD-WRT or 5 GHz right now (I use a DIR-655 that only has 2.4 GHz, works perfectly fine for my needs).
txtsd said:
I tried going back and forth but it doesn't even see the 5GHz network.
I tried the 20Mhz and 40Mhz both, it didn't see either.
Click to expand...
Click to collapse
I had similar problems getting my HTC phone and my daughter's iPod Touch connected to my router, and it took a while to figure it out. I've noticed that some devices do not like connecting to a router using SSID with more than one word or phrase:
router or myrouter = works
my router or this is my router = does NOT work
I had an iPhone 3G which didn't care, and my HP laptop doesn't care about the SSID name. However, both HTC phones we have will not connect if the SSID is more than one word/phrase. I don't have the Atrix yet, but I suspect Android is the reason why SSID is picky?
Something to consider and check...

[Q] Slow wifi?

Anyone else experiencing slow wifi performance with the Galaxy S II?
Running the speedtest.net app against the same server with all the same settings, from my Nexus One I get 8100kbps down, 1100kbps up. On the Galaxy S II I get 1900kbps down, 1100kbps up. The phones were next to each other, and I ran the tests several times and always got very similar results.
Will be flashing with the latest firmware later today (currently it has the O2 firmware on) but just wondered if anyone else was seeing similar issues?
Strange you say that i keep getting max 1900 down on my mobile internet no matter where i go.
Sent from my GT-I9100 using XDA App
You should read this http://forum.xda-developers.com/showthread.php?t=1056633 Maybe it helps
My Wifi super fast .
jje
I get
ping: 52 down:8099kbs up:734kbs on phone
ping: 45 down:11450kbs up:690kbs on laptop
so not much difference
ping 46ms, down 14585kbps, up 4807kbps
over wifi with one bar signal at other end of house.
On Virgin 50Mb service here, and didnt expect anything much more over my wifi.
Weird.
My wifi signal strength as reported by Wifi Analyzer is actually slightly better on the S II than it is on the Nexus One. The firmware update has made no difference to the performance I'm seeing.
Will try it on the work wifi network tomorrow and see if that shows any different behaviour...
snoopstah said:
Weird.
My wifi signal strength as reported by Wifi Analyzer is actually slightly better on the S II than it is on the Nexus One. The firmware update has made no difference to the performance I'm seeing.
Will try it on the work wifi network tomorrow and see if that shows any different behaviour...
Click to expand...
Click to collapse
i hope so because i get superb wifi range and performacne on my nexus one with 2.3.3. my gut feeling is the SGS2 would be a step down and i wouldnt get wifi signal in certain parts of my house where i do with the n1.
The wifi is nothing short of excellent as far as I'm concerned:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
snoopstah said:
Anyone else experiencing slow wifi performance with the Galaxy S II?
Running the speedtest.net app against the same server with all the same settings, from my Nexus One I get 8100kbps down, 1100kbps up. On the Galaxy S II I get 1900kbps down, 1100kbps up. The phones were next to each other, and I ran the tests several times and always got very similar results.
Will be flashing with the latest firmware later today (currently it has the O2 firmware on) but just wondered if anyone else was seeing similar issues?
Click to expand...
Click to collapse
Even though you're connected to the same wifi network the two phones could've connected to different channels. On my desktop I get everything from 1Mbps (very rarerly) to 140Mbps (more likely) and that stays at the same spot all the time
And it got nothing to do with signal strength either as I can have full bars on my desktop and still get 1Mbps (or 20 or 40 or 80 and so forth).
vimto25 said:
Strange you say that i keep getting max 1900 down on my mobile internet no matter where i go.
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
Jammy git!
Orange's data in Bristol has slowly been getting worse. I was barely touching 400kbps the other day. Seemed to speed up a little today though.
I am also experiencing poor wifi speeds. On speedtest.net with my home router, SG2 is getting 0.6 Mbps download speed where my pc is getting 7.5 Mbps. More than 10 times slower?! Any ideas?
Slow Wi-Fo on SGS 2
I have exactly the same problem with my new Galaxy S II. Put the iold SGS and the new SGS 2 side by side and the SGS gets 5.3mbits/s (the broadband connection speed roughly) and the new SGS2 gets 0.9-1.2Mbits/s.
As I have a dual mode g/n router I have tried changing channels on it, turning off n support and everything else I can think off. The wireless router by the way is an Edimax model that works absolutely fine with everything else in the house.
I have also tried eveal different broadband speed tests, all with roughly the same result.
Anyone have any ideas? Mine is that Samsung did their usual thing and released the product with a great big bug in it that won't get fixed for months..sigh.
Slow Wi-Fi Fixed
Got it!
Changed the router to channel 6 (I'd already tried 7,9 and 11) and ..it now works just as well as the old SGS or anything else in the house.. with b/g/n enabled on the AP.
Happy man.
No issues here, Speedtest.net Android app giving me just under 15mb on my 16mb connection which is pretty much the same as I get with my laptop.
Slow Wi-Fi on SGS 2
Well..having thought that a channel change on the AP router fixed it..it did..but only for three or four speed tests, then without changing anything on the router it reverted back to ~1 Mbit/s.
So..I reset the router without changing any settings and lo and behold the SGS 2now seems to be functioning correctly again, with download speeds the same as my other systems.
So, if you're getting the same problem try a channel change on the AP ..or just reset it, it might work. It's also possible of course that the router has a bug and the 'n'th system that connects to it gets these problems. I'll set up another AP and see if the problem stays with the phone or follows the AP.
I had similar problems with very poor wifi. With speeds much worse than my wifes iphone 4 and and my old iphone 3gs. It did seem to be intermittent, but it happened on two different routers numerous channels and settings. I sent it back to and am getting a replacement.
I am also getting slow wifi speeds. Like 1,5 mbit instead of 8 mbit. Reconnected lots of times. Changed channels to 2 instead of 1.
Changed to WEP instead of WPA+WPA2, but nothing helped.
With vodafone i get just 3,6 mbit(max)
Anyone got an idea?
any body can help ? i have this problem too ! slow wifi with very bad signal power !
no body can help ? its hard to use wifi in this phone ...

[Q] SGSII Weak Wifi Radio/Modem

Just bought the phone yesterday, and I noticed that this is the 2nd Samsung phone that is having these WiFi issues.
Sorry of this has been asked before, but I couldn't find it. Google is no help as the searches weren't specific to SGS2 I777 for AT&T.
I can connect to wifi, but the speeds are horrendous! I have a 60mb connection at home connected to my wireless router.
Every phone, iPhone 3GS, iPod, HTC Inspire, iPhone 4S - all have no wifi issues resulting in slow download speeds. Each having a download speed of 5-7 mb or more.
The SGSII, gives me the following results when connected to WiFi:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
and the connections just don't get anywhere near what my other phones can get in download speeds. AND - this is my second Samsung phone in 3 weeks. 3 weeks ago I had the Infuse 4G, and it had the same issue. Took it back. Then got the SGS2 on special , but I'm thinking of taking it back before my 14 days is up if nothing can be solved.
When its off WiFi I can get 3-5mps down/.85mps up.
----------------------
Is this an issue that a custom ROM can fix?
Are there Radios that can fix this WiFi issue?
Thanks for your help.
Try going to speakeasy.net from your browser instead of that app. I'll admit that looks bad and there's clearly something off...
Sent from my SAMSUNG-SGH-I777 using xda premium
Kadin said:
Try going to speakeasy.net from your browser instead of that app. I'll admit that looks bad and there's clearly something off...
Sent from my SAMSUNG-SGH-I777 using xda premium
Click to expand...
Click to collapse
Same results.
Routers sometimes have issues with different radios. Try your phone on a different brand/model router and see what those results are.
Sent from my páhhōniē
What routers are people having good luck with?
Westell, linksys, ubiquiti, netgear have in general worked for me. Issues sometimes with the netgear. Huge A+ on the ubiquiti. That thing is amazing. Run 24/7 and not even a hiccup.
Sent from my páhhōniē
Im using a Linksys wireless router. it might be a defective device.
Sent from my SAMSUNG-SGH-I777 using xda premium
homescrub said:
Im using a Linksys wireless router. it might be a defective device.
Sent from my SAMSUNG-SGH-I777 using xda premium
Click to expand...
Click to collapse
I am having the exact same abysmal throughput issues with my SGSII as well. Home router and work router are both Cisco. I have a 50 meg cable connection amd I cant get over 5 mbps on my home router standing 10 feet from it. My captivate gets better throughput on both wifi and HSPA.
I've tried several different apns for HSPA and Nada. Also tried 5 different ROMs so far, to no avail.
Sent from my SAMSUNG-SGH-I777 using xda premium
Sounds like it is something in the sgsii. Hopefully it's software and not hardware. I've noticed times too that my phone wasn't connecting as fast as the wifi I was connected to.
CRAP! Just lost power. The snow storm that's going through Michigan is getting nasty. I live up in the 'thumb', East of Saginaw.
Sent from my páhhōniē
Yikes
gr8hairy1 said:
Sounds like it is something in the sgsii. Hopefully it's software and not hardware. I've noticed times too that my phone wasn't connecting as fast as the wifi I was connected to.
CRAP! Just lost power. The snow storm that's going through Michigan is getting nasty. I live up in the 'thumb', East of Saginaw.
Sent from my páhhōniē
Click to expand...
Click to collapse
Stay warm!
Hopefully somebody out there can help figure out this radio problem. A quick Google search turned up a lot of other folks in other forums with the same problem.
I'm going to take it back later today to get a replacement.
For high end phones, there should be no reason why the Wifi radio can not get better speeds than regular radio.
Just got power back! Talk about being really happy I have an extended battery. No way I would have made it through yesterday last night and all this morning.
But anywho, I see cm7 has a few different modems, I was wondering where they came from. My only guess is the international.
If that's so I'm more than willing to start flashing modems to see what will work with stock rom.
Sent from my páhhōniē
homescrub said:
I'm going to take it back later today to get a replacement.
For high end phones, there should be no reason why the Wifi radio can not get better speeds than regular radio.
Click to expand...
Click to collapse
When phones first come out it's not uncommon for them to have issues that need to be ironed out.
The iphone 4 would drop signal when 'held wrong'. The captivate couldn't get a gps lock to save it's life, atrix couldn't use 4g, plus many others. After they were in consumers hands fixes got rolled out in less than 6 months(usually), or a fix was available even sooner from xda
Hopefully this is just a software issue that can be fixed easily.
Sent from my páhhōniē
Well not exactly the issue I am seeing. I am having issues with the radio not getting quite the same distance my other phones can get. Not sure if a software fix would help there but here is to hoping it is software and not hardware. It might also be my router considering I am still using g and not n.
I have never had problems with my broadcomm based Asus WL520gU (WiFi G) running tomato firmware with my SGS2. I am getting at least 9Mbps when WiFi is full bar, although I should agree that this phone has weaker signal in comparison with my older phone.
BTW: Galaxy S 2 also uses broadcomm chipset for WiFi and Bluetooth.
Thumbs up for tomato!
Sent from my páhhōniē
gr8hairy1 said:
Just got power back! Talk about being really happy I have an extended battery. No way I would have made it through yesterday last night and all this morning.
But anywho, I see cm7 has a few different modems, I was wondering where they came from. My only guess is the international.
If that's so I'm more than willing to start flashing modems to see what will work with stock rom.
Sent from my páhhōniē
Click to expand...
Click to collapse
The modems MAY help out with wifi issues as well. The modems came from 1. Our original modem that was shipped with our phones "UCKH7", then we have had three LEAKED versions so far with "UCKJ1, UCKJ2" modems from the leaked roms, then we got another.leak for our phones "UCKJ4" ALL those modems are/were made for the i777, and in fact the i9100 (international SGS2) modems do not work in our phones. You can also find another user whose post is now in the sticky threads has the same modems but with the update script for users of samsung based roms.
Sent From My KickAss ATT SGS2 SPORTING CM7
1) Are you using a case? Some people have had severe problems with some cases.
2) The TCP buffer sizes in the stock kernel are a bit small - the buffersize fixes in my kernel fixed it for some people. However for cell data, it's probably just AT&T. In 90% of the country you're lucky to see 3 Mbps.
I think I found out why it won't work well. My phone is running baseband i777UCKH7.
Its supposed to run on Wi-Fi a/b/g/n. I run a wireless Linksys B router at home and at work. Never gave my phones any issue (iPhone 3GS, iPhone 4, iPhone 4S, iPods, HTC Inspire, BlackBerry Bold 9000, 8300, 8900 and work Laptop).
It seems that B/G are not well suited for the phone or Samsungs Wireless radios, but it easily picks up N signals without any issue. I could be wrong, but just my thoughts.
I might have to upgrade my routers, but for now, I will just do it well with what I got. New Linksys routers don't come cheap, even on craigslist.
Go for ubiquiti (ubnt.com). Their equipment is amazing and really good prices.
The AirRouter
http://ubnt.com/airrouter
is one of the best plug in and go routers I've seen. It doesn't support ddwrt or tomato but it's uptime is the best I've seen.
Most times I can find it online through resellers for $50 shipping included.
http://www.flyteccomputers.com/details.cfm?wid=670&wb=AirRouter&wre=1http://www.flyteccomputers.com/details.cfm?wid=670&wb=AirRouter&wre=1
The bullet/nanostation is the most useful thing they have in my opinion. Zero drivers. Just plug in ethernet, configure over ip, and it puts out internet through the ethernet port. Crazy power going to the antenna. Way more than anything I've seen in any store.
Primarily they sell to small isp's so most their equipment is designed to be ran 24/7 with no issues.
Sent from my páhhōniē

Slow Wifi

Got the T-mobile version of this phone recently. For some reason, the wifi speeds are pretty slow when I run speedtests. I have a 100Mbps+ connection at home running a dual-band network of G and N. But no matter what, this phone can't pass even 9mbps. Anyone else have issues? My other Android phones have no problems with speeds. Seems like the wifi antenna is weak in this phone.
Can't say I experience the same. When on my standard 2.4Ghz WiFi I max at 54Mb/s when on my 5Ghz WiFi I tap out my bandwidth for my connection
Check out my Ookla Speedtest result...tp://www.speedtest.net/my-result/a/1548544066
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Sent from my LG-H901 using Tapatalk
Your router must be a poor performer, configured improperly, or you're picking up a lot of interference. My WiFi signal is the only signal in the area (rural). I have a pretty decent ASUS router. On both my 2.4 and 5 GHz connections, I hit 50+ mbps.
elee888 said:
Got the T-mobile version of this phone recently. For some reason, the wifi speeds are pretty slow when I run speedtests. I have a 100Mbps+ connection at home running a dual-band network of G and N. But no matter what, this phone can't pass even 9mbps. Anyone else have issues? My other Android phones have no problems with speeds. Seems like the wifi antenna is weak in this phone.
Click to expand...
Click to collapse
I am having the same exact issue you are. I also have a 100 megs and it only hits 50. I have the Google on hub router. With my nexus 6 I had no issues. How can we change the WiFi band's on the phone. There is no option like the n6 in settings.
Sent from my LG-H901 using XDA Premium HD app
Hmm. Interesting. We have a lot of wireless devices at home and this one seems to perform the slowest for some reason.
checked it after reading this with two different apps and both were slow, even after rebooting my wifi AP only getting 2Mb down and 5Mb up max when my Linux box on wired connecting is doing 60/5.5 ... might be some iffy wifi chips around?
**update**
Played around with the Amped AP settings and have the 5Ghz channel on AC only now I'm getting good speeds for wireless, around 15-20mb down on my V10, however my laptop is getting close to the 60Mb that my wired boxes are... no idea why the phone wifi would be so much slower. Have not rooted/rom'd or anything to my phone, only half a day old.
I am not sure if this has to do with anything. I restored my phone yesterday to before I flashed xposed. Because it did break smart settings and second screen function and maybe other things. My Wi-Fi is working like it should.
Sent from my LG-H901 using XDA Premium HD app
I can confirm that wifi speed is definitely an issue with the V10 (at least with the AT&T version). My wife has a Nexus 6P and she gets 30+ Mbps. I'm only getting (at most) 3 Mbps. My Note 4 was getting 30+ Mbps as well so its not my home wifi equipment.
I'm hoping an update gets released to fix this.
I am having the same exact issue. Very slow wifi speeds. I have the t mobile variant, unlocked it and now on ATT.
nyydynasty said:
I can confirm that wifi speed is definitely an issue with the V10 (at least with the AT&T version). My wife has a Nexus 6P and she gets 30+ Mbps. I'm only getting (at most) 3 Mbps. My Note 4 was getting 30+ Mbps as well so its not my home wifi equipment.
I'm hoping an update gets released to fix this.
Click to expand...
Click to collapse
and just to confirm it again, i'm now connected to my corporate wifi network and I'm still getting about .5 Mbps and spiking to about 3 Mbps. I'm going to factory reset and try again to see if its a problem with software.
Anyone who finds out anything on this, please let me know, as I am having the same issue. I don't want to use all my data, but getting better speeds on LTE than WiFi. Using the Verizon variant. Don't know if i should get my phone swapped out or not at this point. Asked my friend at Verizon, and he said no one else is complaining of the issue.
EDIT: Strangely enough, i'm getting fine speed test, but most of the time, i'm timing out on stuff in apps. It quite annoying.
bschuster said:
Anyone who finds out anything on this, please let me know, as I am having the same issue. I don't want to use all my data, but getting better speeds on LTE than WiFi. Using the Verizon variant. Don't know if i should get my phone swapped out or not at this point. Asked my friend at Verizon, and he said no one else is complaining of the issue.
EDIT: Strangely enough, i'm getting fine speed test, but most of the time, i'm timing out on stuff in apps. It quite annoying.
Click to expand...
Click to collapse
My speedtests run pretty well; I can get over 100Mbps, which is 90% of my Comcast bandwidth. However, establishing connections and/or maintaining them in apps or web browsing seems to be very laggy/intermittent. For example, when I refresh Instagram, it will show the text parts of the posts, but it takes another 5-10 seconds for the images to appear. Similar experience in Google Play and Chrome -- text comes down pretty quick, but the additional data like images and such take another 5-10 seconds. My LG G2 on the same network works seamlessly and without pauses. I have factory reset my V10 twice with no improvements. I have the Verizon V10 variant.
One articleI saw mentions a possible wifi firmware problem when SD cards are inserted. I pulled my SD card with no improvement.
This really seems like a firmware/hardware issue. Hope it gets addressed soon.
PoorK said:
My speedtests run pretty well; I can get over 100Mbps, which is 90% of my Comcast bandwidth. However, establishing connections and/or maintaining them in apps or web browsing seems to be very laggy/intermittent. For example, when I refresh Instagram, it will show the text parts of the posts, but it takes another 5-10 seconds for the images to appear. Similar experience in Google Play and Chrome -- text comes down pretty quick, but the additional data like images and such take another 5-10 seconds. My LG G2 on the same network works seamlessly and without pauses. I have factory reset my V10 twice with no improvements. I have the Verizon V10 variant.
One articleI saw mentions a possible wifi firmware problem when SD cards are inserted. I pulled my SD card with no improvement.
This really seems like a firmware/hardware issue. Hope it gets addressed soon.
Click to expand...
Click to collapse
Agreed, quite annoying.
Anyone continuing to have these issues. Having the Same issue on my TMO Version. Slow to load pages both network and wifi.
1SiK1500 said:
Anyone continuing to have these issues. Having the Same issue on my TMO Version. Slow to load pages both network and wifi.
Click to expand...
Click to collapse
Sadly, still having this issue.
TWC Wi-Fi, guaranteed for 50mbps and that's pretty much what I'm getting.
Krowbarr said:
TWC Wi-Fi, guaranteed for 50mbps and that's pretty much what I'm getting.
Click to expand...
Click to collapse
It's really hard to explain, but i know that the people on here get it, it's not that it's slow when it's working, cause speed tests are fine, it's the initial connection on some apps that just timeout, or take a really long time to load, but it doesn't do it on LTE, only on WiFi. Instagram for instance, takes forever to load pics, videos, even the pages sometimes, just sits there and thinks, Facebook on occasion, google wallet for sure, i have to go to data most of the time to load google wallet (something with android pay), but webpages seems to load fine, except for some SSL sites, again, slow to load....Now that i'm thinking about it, i wonder if it is something with SSL that's causing some things to be slow....Think about it, speedtests aren't SSL, so those would run fine, but google wallet and android pay are SSL for sure, i'm not 100% on Instagram or Facebook? Can anyone confirm that the traffic on those are SSL?
**Sometimes when i'm typing stuff out, it all comes together in my head...lol***
Ya I hear ya, although the speeds are good sometimes there is slight delay?
Not so much speestests, they always run good because they are running over HTTP, not HTTPS. It seems like apps and webpages that run SSL run really slow. But again, I do not see this on cell data.
Add me to the list of people having wifi problems. Speedtest tests my home connection at 180Mbs. But browser surfing drags along.

SM-T825 WIFI 5GHz instable connection

Hi,
I bought the tab last friday. While playing around I noticed that Wifi does an
endless reconnect-loop when using 5 GHz Wifi. 2 GHz works fine..
Could anybody please try? Turn off your router's 2 GHz and use 5 only.
Watch the Wifi nenu in your tab.
Thanks
joe535 said:
Hi,
I bought the tab last friday. While playing around I noticed that Wifi does an
endless reconnect-loop when using 5 GHz Wifi. 2 GHz works fine..
Could anybody please try? Turn off your router's 2 GHz and use 5 only.
Watch the Wifi nenu in your tab.
Thanks
Click to expand...
Click to collapse
Tried again yesterday.. Only one reconnect in 10 Minutes.. Seems, that 5G WIFI in general somtimes
makes problems.. So, please can someone close this thread?
joe535 said:
Tried again yesterday.. Only one reconnect in 10 Minutes.. Seems, that 5G WIFI in general somtimes
makes problems.. So, please can someone close this thread?
Click to expand...
Click to collapse
My tablet is connected to 5 gigahertz exclusively and has never dropped the connection. You may want to take a look at your router's wifi settings.
I have a brand new Galaxy Tab S3 SM-T820 Wifi version, and I have two wireless routers in my home. One is a RavPower ND007, the other a DLink DIR-813. Both are dual band routers. On both, I have the 2.4 GHz network and 5 GHz networks names differently. Every other device in my home - including a number of Samsung devices - connects to all four networks with no problem.
However, my Galaxy Tab S3 does not. When connecting to the Rav, it shows "Connected, No Internet", and can't communicate at all. It won't even connect to the DIR-813 at all.
It connects flawlessly to the 2.4GHz networks on both routers.
Both of the routers, and the Tab, all have the latest available firmwares/updates.
So it's definitely the Tab S3, and definitely a 5GHz problem.
Not sure how to report this to Samsung, but I'm going to try...
defenitley YES, 5G problem...
wfire said:
I have a brand new Galaxy Tab S3 SM-T820 Wifi version, and I have two wireless routers in my home. One is a RavPower ND007, the other a DLink DIR-813. Both are dual band routers. On both, I have the 2.4 GHz network and 5 GHz networks names differently. Every other device in my home - including a number of Samsung devices - connects to all four networks with no problem.
However, my Galaxy Tab S3 does not. When connecting to the Rav, it shows "Connected, No Internet", and can't communicate at all. It won't even connect to the DIR-813 at all.
It connects flawlessly to the 2.4GHz networks on both routers.
Both of the routers, and the Tab, all have the latest available firmwares/updates.
So it's definitely the Tab S3, and definitely a 5GHz problem.
Not sure how to report this to Samsung, but I'm going to try...
Click to expand...
Click to collapse
Last Sunday I forgot to turn off Wifi 5G on my router and used my Tab S3.... Reconnect each 2 seconds... Super Quality, Thanks a lot to Samsung..
And just to clarify - 5G works with the same router and my Phone S8 perfectly, so it is NOT a rouoter issue...
I've been using 5G exclusively as our SSID is 5G specific and never had an issue with WiFi. Solid connection 100% of the time. Netgear Nighthawk X8 here.
aspexil said:
I've been using 5G exclusively as our SSID is 5G specific and never had an issue with WiFi. Solid connection 100% of the time. Netgear Nighthawk X8 here.
Click to expand...
Click to collapse
Will try to install the latest update this weekend, without any modifications. If 5G still does not work, I will send the Tab to samsungs repair-center, as it still will be covered by warranty.
Either it is a problem with modem-driver or Hardware..
But nevertheless, this is the very first device showing up this problem with 5G.
If Samsung is not capable to solve, this will be my last product purchased from this brand...
I did send my Tab to Samsung repair center in Germany. Will receive it today, but I already know that they did not find any problem, all fine..
Well - but they did not give me a detailed test-report yet... So I dont know what and how they tested..
Will return the Tab to my local dealer for replacement..
I'd like to test with a different SM-T825...
Reading this I haven't seen that you've tried updating your router's firmware. If you haven't try that too. I'm not sure if when you say "install latest update" if that's the router or the tab.
Sent from my [device_name] using XDA-Developers Legacy app
jd1639 said:
Reading this I haven't seen that you've tried updating your router's firmware. If you haven't try that too. I'm not sure if when you say "install latest update" if that's the router or the tab.
Sent from my [device_name] using XDA-Developers Legacy app
Click to expand...
Click to collapse
Just by chance I found out, that 5G works if no SIM inserted. And IF SIM is inserted, it MUST be active. In flightmode and then activate WIFI does NOT work..
This is very suspicious... I hope that SOON we will find a working lineage for the galaxy tab S3...
Galaxy Tab S3 SM-T820 Wifi version and dual band 5ghz
Hmm, I just updated my modem as per better speeds from Comcast, but I also need a new router that would take advantage of the bandwidth and the 802.11ac dual band standard so that I can get to the 5ghz band.
I own a Galaxy Tab S3 SM-T820 WiFi and before I get a new router, I want to know if the WiFi adapter in the Tablet would pick up on the 5ghz band with a new router. Is there any type of updates or drivers or am I okay?
Thank you,
Jon
I'm on 5Ghz all the time. No issues.
Great news !!
I asked the question after I learned about the variety with routers and especially since I found out that my laptop's WiFi adapter only supports b,n,g and that I would need to buy a USB WiFI adapter for my laptop or somehow change the adapter chip inside my laptop to take advantage of the 802.11ac dual protocol.
Thank you, Jon
I have the t825 version, unfortunately I have problems with the 5 Ghz connection.
I hope Samsung releases an update to fix the connection problem and to improve the camera
Athawulf said:
I have the t825 version, unfortunately I have problems with the 5 Ghz connection.
I hope Samsung releases an update to fix the connection problem and to improve the camera
Click to expand...
Click to collapse
Hi, I have the T835 and I have the same problem. It disconnects 5 ghz, problem since I bought it.
Sorry, I'm wrong with thread

Categories

Resources