[Q] wifi problem questions on sg2 - Galaxy S II Q&A, Help & Troubleshooting

Hi all.
A per my post in this thread. http://forum.xda-developers.com/showthread.php?t=1117077
Code:
Hi all. I also have weak signal problem as well as fon router issue. The signal strength isn't as bad as being mentioned above, but still could be better.
But with my fon I can connect and connection is as showing connected, but I can't browse or have any connection to Internet whatsoever. When connecting to fon both lights on the router start flickering like normal and once connected when browsing or going to market for apps just one light blinks, when both should under normal activity.
Also I get this error message " a network error has occurred. retry or cancel and return to previous screen." when I try going to market.
I've tried setting security to none and wpa and still same no net.:confused:
Now some personal thoughts with experience with Linux and wifi. I think the problem is with driver or the firmware of wifi card on GS2. I had netgear card even thought it was claimed to work with Linux it kept on overheating and dropping connections with weak signal and every time I had to patch it to make it work properly, Many have reported same issues with other devices with Linux when it was claimed that devices should be working but were not.
My question is there anything I can do other than I haven't so far to check the problem why am not getting Internet through my fon router? Or any other checks I can do other than wifi tools I downloaded?
Thanks

coolfi said:
Hi all.
But with my fon I can connect and connection is as showing connected, but I can't browse or have any connection to Internet whatsoever. When connecting to fon both lights on the router start flickering like normal and once connected when browsing or going to market for apps just one light blinks, when both should under normal activity.
Thats the router not the phone .
Set router to no security or passwords .
DELETE ROUTER WIFI FROM PHONE REBOOT AND RESET UP WIFI .
JJE
Click to expand...
Click to collapse

Hi, I've tried that still the same problem.
And it's not the router since every other device connects to it and many laptops and computers, without any problem.
Like I said I've tried it with wpa wep and no security just open, and still no Internet, even though it's showing as connected with signal bars at the top of the phone.
I've tried the phone with friends routers and it works on those. But not with mine which is Fonera.

Does anyone know what chip is used for wifi in these phones?

In case anyone else is wondering it's Samsung's own brand.
manufacturer=Samsung Electronics
device_type=1-0050F204-1

Related

[Q] WIFI connection stops transfering data

Hi, is anyone has the same problem? When I'm connected at home to my Tenda router (WIFI b/g/n) after cca 30 min. my phone WIFI stops sending and recieving data, Skype is offline, etc... but WIFI in phone is stil switched on. After I switch WIFI off and back on (on my Samsung, not on my router), everything works good for a while and after cca 30 min. is situation the same. Is there in Samsung any WIFI sleep mode or something like that? Or some settings, which is not visible? Any other suggestions? Sorry for my poor English. Thanx in advance.
I'm having the same problem. But I did a factory reset and it works fine afterward.
And just few hours ago, I encountered this problem again. What did to get this error was, I pressed "on samsungapps" and it failed to update and thus results wifi connection stopping. What about you? Also my Kies air is not working.
are you guys sure you have wifi sleep policy set correctly? just to be sure, settings, wireless, wifi, menu button, advanced, wifi sleep policy to NEVER.
Yes. And also even if i manually disconnect and reconnect the wifi back. The data still doesn't come in. It is stated there as connected but no data at all.
Somehow Wifi keeps searching every few seconds, even thought it's connected.
This is bound to cost in battery life too.
I have reseted router to default settings, disabled n mode, disabled security (only mac filtering is on), disabled all unnecessary features and PROBLEM IS SOLVED !!! Thanx God Tomorrow I will experiment with router settings to know, what was causing this error ;-)
Well at least u're connected, I'm facing the same problem as the thread starter. No data flow at all. Browser showing me offline msg. I had the same problem on the 1st day with the phone after I woke up. previously playing with most of the default aps. So i'm not sure what went wrong, did a factory reset and it works fine.
Until, few hours ago, I tried my kies air which didn't work. Browser couldnt load the address given. And I thought i had an outdated kies air, so i went to click on samsungapps, which failed to update me. At that point the wifi is still working, i leave my phone for about 30 mins, and when i came back. The same problem which happened on the 1st day came back. I was hoping to find an answer here so I didnt do the factory reset it. On another note, the phone wifi works after restart, but wouldn't last.
Edit: The wifi works after i resetted my modem to default. oh well. at least that solved it.
lukecz said:
I have reseted router to default settings, disabled n mode, disabled security (only mac filtering is on), disabled all unnecessary features and PROBLEM IS SOLVED !!! Thanx God Tomorrow I will experiment with router settings to know, what was causing this error ;-)
Click to expand...
Click to collapse
Hi,
Did you find out what setting was causing the connection issue? I also have this problem with my Tenda router. I thought it might be the wireless N, but disabling that doesn't fix it. I have a wireless distribution system set up with other tenda routers so didn't want to disable all the settings to troubleshoot if i can help it!
Thanks
spen2 said:
Hi,
Did you find out what setting was causing the connection issue? I also have this problem with my Tenda router. I thought it might be the wireless N, but disabling that doesn't fix it. I have a wireless distribution system set up with other tenda routers so didn't want to disable all the settings to troubleshoot if i can help it!
Thanks
Click to expand...
Click to collapse
I have the same problem, my router is N and the conection between SGS2 and my router is bad. Any idea?
Same problem here, I'm running WZR-AGL300NH in access point connected to my Ubuntu Server. Everything else works in the house just fine but SG2 stops transmitting data after a while.
I recently upgraded to KF1 firmware (and unknowingly wiped out whole phone, being on the bleeding edge and that didn't seem to help.
I would very much appreciate all tips because this problem is very annoying!
Additional Info:
- Buffalo is running latest firmware
- Authentication WPA2-PSK
- Encryption AES
paranoidi said:
Same problem here, I'm running WZR-AGL300NH in access point connected to my Ubuntu Server. Everything else works in the house just fine but SG2 stops transmitting data after a while.
I recently upgraded to KF1 firmware (and unknowingly wiped out whole phone, being on the bleeding edge and that didn't seem to help.
I would very much appreciate all tips because this problem is very annoying!
Additional Info:
- Buffalo is running latest firmware
- Authentication WPA2-PSK
- Encryption AES
Click to expand...
Click to collapse
Same symptoms here. Cisco DDR2200. WPA2 PSK. Haven't tried fiddling with the router yet.
This seems to be a common problem. Anyone knows of a definitive fix?
Bump...I have the same problem and the issue persists even after i reset the phone
Sent from my GT-I9100 using XDA App
Glad I found this, thought it was the ROM I had flashed to the phone (which is VillainROM)
I keep losing connection from my phone via wifi like everyone else in this thread
edit: I've just assigned my phone an IP address via my routers settings and I can connect to the net again
Also when it wasn't working, I couldn't ping the phone. When I assigned the IP just now I still couldn't ping it.
When I did a tracert to it, I could get to it when the IP was assigned and when it wasn't.
I have no removed the assigned IP for the phone from the router. Wifi connection is still working after disconnecting/reconnecting wifi on the phone.
I can also now ping the phone, where as before it was getting timeouts.
Also when it wasn't working the first time when I did a tracert it was showing up as HPsomething (didn't make note of the numbers)
this time when it is working it's just showing up as the IP address when doing a tracert.
Another update:
Just checked my printer, it has an IP address manually set on it, which at one stage when the phone wasn't working for internet it had the same IP as the printer, hence when tracert'ing it I was going to the printer instead of the phone and getting the HP etc back.
When it wasn't working at that time and looking at my routers DHCP list, it had the MAC Address of the phone against the IP that the printer has....
So I've got some issues with how my own network is setup ^_^ which looks like is causing me grief.
So the issue is with DHCP? Setting a static IP fixes it? I'll have to try, but I doubt this is a problem with the network, as all my other devices use DHCP without this problem.
I have the exact same problem!!
It's really annoying.
i was having problems with wifi too.. it keeps scanning and checking, etc, signal dropping for no reason..
fixed mine..well for me it worked
backup ur phone ( i dont take responsibility if ur phone catches fire or dies or chases u around )
u need to be rooted
download FXR WiFi fix and rescue from market
and just run the app.
now my wifi signal stays constant speed and i get good speeds
alternatively try
WiFi Fixer
both of them will cause high battery usage..i think since it keeps the signal at maximum.. so only enable wireless when i need it or use juice defender or green power.
greenpower seems great. using this at the moment

[Q] Help problem with Wifi conects but no Internet

OK so I have T mobile version Galaxy S 3 phone is rooted (stock ROM)
WiFi was working properly except that sometimes when I had few devices connected to my router it didn't want to connect , but I have always experienced that problem with android on my HTC Evo and My touch 4g, it seems that when you connect to a router and disconnect and another device connects the phone tries to connect using the old IP which is now used by the other device.
its annoying but biggest problem now with the S 3 is that 2 days ago the phone will connect to the router at least it shows the WiFi icon on the status bar and on the wireless and network info ( connected ) but once I try to open a web page or app like Facebook it will show no connection, Kies air doesn't even recognize that there is a WiFi connection.
I have tried looking around on this forum and on google and have seen other people with same problem but no solution at all.
any ideas anyone?
I have tried forgetting the connection, restarting phone router, modem.
and other devices including my old phones work.
If your getting the same problem with different phones then the problem must be with your router. It seem that it only allows a certain number of devices to connect to it.
No, other devices and phones are working properly, problem is only on the SG3 100% sure not router problem at all , I am thinking something about the WiFi info on the phone got corrupted or something I guess I will try factory reset and wipe everything.
Well for future references, I had to do a full wipe ( data, dalvik, cache) and its working now as intended.
anyone experiencing this problem with galaxy s3 wifi connection after I reset my device it started working again but now after a few days the issue is back, have Wifi ICon on status bar but no connection to the internet at all, this is only happening with the S3 , evo 4g , mytouch 4g, laptop and desktop work without any problems.
Ok finally found the solution without the need of resetting the device. had to use static ip on my phone...
long click network connection , modify network config, show advance options, "ip settings = static" assign an ip and if u need help finding other info as gateway, dns servers etc..
on windows run "cmd" and ipconfig /all

[Q][Help]Wifi only works 3 meters away from router

Dear All ,
I have been suddenly encountering wifi connection issues with my S3.
It refuses to connect to any router unless i am very near to it.
There is no problem with reception as the phone can detect the wifi and has 3-4 bars
If i try connecting while far away from the router to a detected network, it just gets stuck on "connecting.."
If i connect while near the router and then walk away, remains connected but I have no internet access..
Things I have tried:
1-cycling wifi on/off , reboot phone, reboot gateway
2-turning off wifi power saver from service mode *#0011#
3-flashing a different non stock rom after doing a wipe/factory reset.
4-searched extensively for three days with no avail
If any encountered such a problem before and was able to solve it, your help is highly appreciated.
marwanhamed said:
Dear All ,
I have been suddenly encountering wifi connection issues with my S3.
It refuses to connect to any router unless i am very near to it.
There is no problem with reception as the phone can detect the wifi and has 3-4 bars
If i try connecting while far away from the router to a detected network, it just gets stuck on "connecting.."
If i connect while near the router and then walk away, remains connected but I have no internet access..
Things I have tried:
1-cycling wifi on/off , reboot phone, reboot gateway
2-turning off wifi power saver from service mode *#0011#
3-flashing a different non stock rom after doing a wipe/factory reset.
4-searched extensively for three days with no avail
If any encountered such a problem before and was able to solve it, your help is highly appreciated.
Click to expand...
Click to collapse
I haven't encountered this specific problem before, but I have had other problems with my S3 and WiFi. It turned out the problem was my router, which was in 5ghz mode. If you have a 5ghz router, try to switch it to 2.4ghz.
Something else you can try is to change your modem and/or kernel. Those 2 both have something to do with WiFi, so maybe it'll work.
Again, I haven't encountered your specific problem myself, these are just some suggestions.
Sent from my Galaxy S3 with Tapatalk
marwanhamed said:
Dear All ,
I have been suddenly encountering wifi connection issues with my S3.
It refuses to connect to any router unless i am very near to it.
There is no problem with reception as the phone can detect the wifi and has 3-4 bars
If i try connecting while far away from the router to a detected network, it just gets stuck on "connecting.."
If i connect while near the router and then walk away, remains connected but I have no internet access..
Things I have tried:
1-cycling wifi on/off , reboot phone, reboot gateway
2-turning off wifi power saver from service mode *#0011#
3-flashing a different non stock rom after doing a wipe/factory reset.
4-searched extensively for three days with no avail
If any encountered such a problem before and was able to solve it, your help is highly appreciated.
Click to expand...
Click to collapse
I'm having the same problem for about 2 months now, it's driving me crazy, if anyone knows how to fix this please let us know! Thank you in advance.
AS the guy above you suggested try changing your modem and if that fails try a new kernel which should sort out the problems you are having. Or as he also suggested try your router and make sure it isnt in 5ghz mode only.
Try logging into your router's configuration and changing the wireless network channel from auto to a manual setting (e.g. 9 or 3). The only wifi problems I ever had with my S3 were (misconfigured) access points and routers.

[Q] Connection issues

Hey everyone, I got myself a Z2 recently and have been very happy about it for the most part. However, some things seem to not function a 100% the way it's supposed to.
Some times after it's been to sleep and I try browsing online with it using either 3g/4g or wifi the phone says it has a connection, but nothing loads. All I have to do to solve this is to refresh the wifi/3g connection manually, and then it works. It's rather annoying to always go through that procedure every time I want to use my phone, so I'm wondering is there anything I can do about this? Or anyone experienced anything similar?
Vegard
I have the same issue with WiFi while the phone sleeps or is active (no probs with mobile data though!), but I was not able to determine whether it's my router, the phone, or a combination of the two (though I have a hunch).
When I'm in my room which is unfortunately the farthest from the router, and the connection drops, my Z2 is not able to reconnect on its own. Have to disable/enable WiFi or else it's stuck in an infinite loop of connecting and obtaining an IP.
Now, I'm fine with a dropping connection occasionally given the distance and the... quality of my router. However, my laptop is able to reconnect automatically.
I have tried lots of possible solutions: WiFi sleep policy, static IP or DHCP, disabling/enabling WiFi optimisation or Auto-IP, switching WiFi channels, and various WiFi fixer apps. Nothing worked.
My guess? There is a bug in the stock firmware that makes the phone unable to reconnect if a connection is forcibly dropped . Pair this with a crappy router and you have a recipe for inconvenience.
Unfortunately, I have no spare router to confirm this, and with the bugs in CyanogenMod I am reluctant to flash for now.
Also, I am sure this is not a hardware fault of the phone in my case since I notice this behaviour at home in my network only.
Do you guys possibly know where I could find some logs related WiFi? I wanna get to the bottom of this.

[Q] i9300 wifi signal/connection issues - Murata vs Samsung module

Hello team,
My Samsung Galaxy S3 GT-I9300 (international version) started to have wifi problems after stock update to 4.1.2. After that, I´ve tried many software and hardware fixes, including changing the wifi antenna cable. The result was the same, so I decided to try custom ROMs and came straight to CM11.
The wifi signal is very weak, and I can only connect from a few meters from the router
Installed CM11, full wipe cache/data/dalvik and still the same problem, weak wifi, connection only from if close to the wireless router.
Reading all the forums on XDA and CyanogenMod, I found the wifi-fix patch, which writes "murata" on the /data/.cid.info. This fix brought me powerful wireless signal, and now I get full signal bar to my router and even see many neighbor APs... but I am not able to connect. When I try to connect, type de password and than it just goes back to "Saved, protected by WPA/WPA2". I´ve also disabled authentication on the wireless router, and the result is the same. It won't connect not even to open networks, although I see strong signal.
Deleted the wifi_fix patch (delete ¨91fixwifi¨ on init.d, delete ¨.cid.info¨ under /data and rebooting), and went back to old status: very weak wifi signal, but able to connect (associate) if I´m very close to the router.
Turned wifi on and off, airplane on and off, captured log on "Murata" and "Samsung" modes...
Strange is that my wlan mac address is 88:32:9b:xx:xx:xx, which seems to be Samsung, but the Murata brings me powerful signal (although I cannot connect).
Well, I´ve tried many solutions so far, but that´s how far I could go...
Can anyone provide me some clue to solve it? I would be very thankful to have wifi back to my phone.
Log files are in attachment
Murata log (strong wifi, not able to connect)
Samsung log (weak wifi, able to connect when very close to wireless router)
Thank you all!
I too have only a range of 3 metres, I have 7 routers in the house because of this, yet I have less than 15% coverage of the house with this device. To put that in perspective, an HTC One X and Atrix 2 has 90% coverage with 2 routers. I'm 1 metre from the router in my room and I've got 1 bar, sometimes 2 briefly.
[Edit]
Woah, I tried the fix from:
http://forum.xda-developers.com/galaxy-s3/help/cm9-i9300-advice-t1898004/post41394293
Seeing as it can easily be reverted, it displays very high signal. What I'd expect. But it doesn't let me connect either. I also tried CM10.1 like the people who it worked for, it didn't work.

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