[Q] Problems connecting home wifi - Galaxy S II Q&A, Help & Troubleshooting

Hi, I have a Galaxy SII from AT&T and I have problems trying to connect the wifi at home, When I tried the mobile is connected just for a few seconds and then suddenly it is disconnected, but the wifi network still displayed. If I go to youtube, fb, twitter or any other application the icon shows the green arrow saying data is sending, but the orange arrow is not flashing. I tried to connect to other wifi (public places or friends) and it is working fine without disconnecting. One thing I notice is if I try to connect at home and start tune in, I will be connected always meanwhile tune in is running. My ISP is Century Link and my laptop and ipod don´t have problems, just the galaxy. I called the ISP and they said everything is fine with my signal and my modem. No I have the app wifi fixer running just to reconnect each time the mobile doesn't have wifi signal.
My galaxy is unrooted, running Android 4.0.4 Baseband I9100XXLQ6 Kernel 3.0.15-1114882 build number imm76d.xwlpy
I hope somebody can help me.

tried erasing your home wifi settings and re configure it?
might be a conflict.

Thank you, but i did it also i removed all the wifi network and still the same problem
gastonw said:
tried erasing your home wifi settings and re configure it?
might be a conflict.
Click to expand...
Click to collapse

hugeband said:
Hi, I have a Galaxy SII from AT&T and I have problems trying to connect the wifi at home, When I tried the mobile is connected just for a few seconds and then suddenly it is disconnected, but the wifi network still displayed. If I go to youtube, fb, twitter or any other application the icon shows the green arrow saying data is sending, but the orange arrow is not flashing. I tried to connect to other wifi (public places or friends) and it is working fine without disconnecting. One thing I notice is if I try to connect at home and start tune in, I will be connected always meanwhile tune in is running. My ISP is Century Link and my laptop and ipod don´t have problems, just the galaxy. I called the ISP and they said everything is fine with my signal and my modem. No I have the app wifi fixer running just to reconnect each time the mobile doesn't have wifi signal.
My galaxy is unrooted, running Android 4.0.4 Baseband I9100XXLQ6 Kernel 3.0.15-1114882 build number imm76d.xwlpy
I hope somebody can help me.
Click to expand...
Click to collapse
This will be hard to debug without further information.
You should try to take a look at the log files of your phone and your AP. On your phone use CatLog to record what is going on when you try to establish a Wifi connection. On the AP side the manual will tell you if and how you can access log file information of the AP.

i'm still smelling ip conflict....this might not be a phone problem but a router problem.
might wanna look into that.

FYI, though your question is general enough that an answer provided here may be relevant to you, this forum is for a device that is different from yours.
The AT&T Galaxy SII has its own forum: http://forum.xda-developers.com/forumdisplay.php?f=1301

ctomgee said:
FYI, though your question is general enough that an answer provided here may be relevant to you, this forum is for a device that is different from yours.
The AT&T Galaxy SII has its own forum: http://forum.xda-developers.com/forumdisplay.php?f=1301
Click to expand...
Click to collapse
My Galaxy is SII I9100 unlocked, that's why I posted here my question. I don't have problems whit the carrier, it is with my home wifi only. I removed all the other saved wifi connections, made a factory restore, but still having problems. My modem is brand new, I have 2 weeks with it. all other devices connect correctly and don't loose the connection, even my Ipod, also I set a static IP to the sgsII without results. I only have internet for at max 40 secs then the wifi icon is showing just the green arrow (sending data) but no orange arrow (receive data). My only "solution" at the moment is us wifi fixer, I installed the cat log as one of the user responses but I don't know which word I have to track there are many WIFI.

try setting your router to dynamic assignation. I'm pretty sure that is an IP conflict.
Problems started - with the phone only - around the time you got the router?
from sii xda-ded

gastonw said:
try setting your router to dynamic assignation. I'm pretty sure that is an IP conflict.
Problems started - with the phone only - around the time you got the router?
from sii xda-ded
Click to expand...
Click to collapse
Hi my router is in DHCP mode, I only have 3 devices connected, my laptop, Ipod and galaxy sII, the problem is present only with the phone, I followed this video and changed the wireless channel and the internet holds for a while but after 5 mins I don't have any response from the router. just the green arrow. Modem model Actiontec C1000A attached are some images of my router configuration as well the log, it shows the elapsed time between connection and disconnection it is because wifi fixer checks the connection and
tries to repair it if it not possible then turns off and on the wifi

I have the very same Problem! Internet works for a few seconds or minutes. Suddenly all downloads etc. stop and only one arrow in the wifi symbol is flashing. Tried a lot of things now. Have no problem with other networks.
What i tried:
g -> n (but one of my devices don't supports n =( )
20 to 40 MHZ -> No connection @ all
Fixed or dynamic ip -> same result
All other devices work great with my thompson router. Disable and Enable of the WIFI give's me a few more minutes with connection. Programmed now in tasker that wifi is disabled with display of...
Greatz

hugeband said:
My Galaxy is SII I9100 unlocked, that's why I posted here my question. I don't have problems whit the carrier, it is with my home wifi only. I removed all the other saved wifi connections, made a factory restore, but still having problems. My modem is brand new, I have 2 weeks with it. all other devices connect correctly and don't loose the connection, even my Ipod, also I set a static IP to the sgsII without results. I only have internet for at max 40 secs then the wifi icon is showing just the green arrow (sending data) but no orange arrow (receive data). My only "solution" at the moment is us wifi fixer, I installed the cat log as one of the user responses but I don't know which word I have to track there are many WIFI.
Click to expand...
Click to collapse
You said it was "from AT&T", so I assumed you had an SGH-I777, which is the model AT&T sells. I stopped reading, so I missed where you said it was an i9100.
Anywho, try changing the channel on your wifi router.

Look at this guy & his S iii; doesn't ring a bell?
http://forum.xda-developers.com/showthread.php?t=1769716

ctomgee said:
You said it was "from AT&T", so I assumed you had an SGH-I777, which is the model AT&T sells. I stopped reading, so I missed where you said it was an i9100.
Anywho, try changing the channel on your wifi router.
Click to expand...
Click to collapse
I have changed the channel and it improves, but still disconnecting after 5 minutes

hugeband said:
I have changed the channel and it improves, but still disconnecting after 5 minutes
Click to expand...
Click to collapse
So did you try all the other ones?

I tried with all the channels, still same problem, also with static IP and the problem still there, my only workaround is connect to wifi, start immediately tune in, and the mobile is able to receive emails, whatsapp, etc. but if I tried youtube, then tune in is disabled and the video starts the streaming but suddenly the mobile is not getting more data from the router, I'm able to watch just 1 video 2 min long

hugeband said:
I tried with all the channels, still same problem, also with static IP and the problem still there, my only workaround is connect to wifi, start immediately tune in, and the mobile is able to receive emails, whatsapp, etc. but if I tried youtube, then tune in is disabled and the video starts the streaming but suddenly the mobile is not getting more data from the router, I'm able to watch just 1 video 2 min long
Click to expand...
Click to collapse
What should bother you is that you can connect to any wifi network, but your home's.
Burn that router down!
....or try another one.

yes, I will call to my ISP and ask for a new one. Sometimes I want just to watch some youtube videos without turn on the laptop or simply use my wifi to save some Mb from by dataplan

hugeband said:
yes, I will call to my ISP and ask for a new one. Sometimes I want just to watch some youtube videos without turn on the laptop or simply use my wifi to save some Mb from by dataplan
Click to expand...
Click to collapse
You should go to someone you know who's got the same ISP than you first, try it there. If it works it's your router, If it doesn't it's you ISP config that's creating a IP conflict with your device.

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] wifi problem questions on sg2

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

[Q] S3 Wifi, Roaming and Time Issue. Please help

I am away form home now and facing some frustrating issues with my new S3.
1. I cant connect to any WIFI network though the WIFI connection has very good signal strength. I always get the msg 'Network disabled. Poor Connection'. There is nothing wrong with the WIFI as i can connect it with my laptop and my buddy could connect to it using his IPhone.
2. My roaming time is completely wrong. It does not follow the time of the country I am in. It is showing the same time as my home country network. Shouldnt it automatically detect the network and shows the correct time like Iphone?
99heyho said:
I am away form home now and facing some frustrating issues with my new S3.
1. I cant connect to any WIFI network though the WIFI connection has very good signal strength. I always get the msg 'Network disabled. Poor Connection'. There is nothing wrong with the WIFI as i can connect it with my laptop and my buddy could connect to it using his IPhone.
2. My roaming time is completely wrong. It does not follow the time of the country I am in. It is showing the same time as my home country network. Shouldnt it automatically detect the network and shows the correct time like Iphone?
Click to expand...
Click to collapse
1. Restart the router & try just using 2.4Ghz in settings > wifi > advanced
2. Ensure: menu > settings > date & time > check [auto date & time] and [auto time zone]
UpInTheAir said:
1. Restart the router & try just using 2.4Ghz in settings > wifi > advanced
2. Ensure: menu > settings > date & time > check [auto date & time] and [auto time zone]
Click to expand...
Click to collapse
1. I cant restart the router as i am connecting to the Hotel's wifi. Everything else can be connected to it except for this S3. I followed your instructions but it keps showing "Connecting". and nothing else happens.
2.I have already check both auto date & time and auto time zone earlier. But the problem still persists.
Please help
Beginnin to regret my decision to get a S3. So complicating!
If you happen to have a case on, remove it and try again.
Sent from my GT-I9300 using xda premium
Turn off wifi, reboot, and turn on?
Sent from my GT-I9300 using xda premium
99heyho said:
I am away form home now and facing some frustrating issues with my new S3.
1. I cant connect to any WIFI network though the WIFI connection has very good signal strength. I always get the msg 'Network disabled. Poor Connection'. There is nothing wrong with the WIFI as i can connect it with my laptop and my buddy could connect to it using his IPhone.
Click to expand...
Click to collapse
Did you find how to fix it? I've got the same problem with wifi and I'm in roaming now.
noviak said:
Did you find how to fix it? I've got the same problem with wifi and I'm in roaming now.
Click to expand...
Click to collapse
Hi, this is my first post, as I created my account specially with the purpose to answer you.
After being faced with the problem all day and reading all possible materials on the topic in google and here, my dad walked in and asked me why he is not able to connect to our home wireless connection.
This was when I retrieved my hope that the problem is not in the phone. And it was not! My iPhone, my laptop were able to obtain a internet connection in contrast to my other laptop and my S3! I restarted the rooter and everything was ok! Everbody got their internet dose !
So, most probably it isn't you!
Also have wifi problem, except it tells me it's an authentication error. I cannot connect to the WiFi unless I stand right next to it. Can't connect to WiFi anywhere (if you think it's the router in my house), even though the device detects the router. Sent it back to Samsung.
Ren Hayashi said:
Also have wifi problem, except it tells me it's an authentication error. I cannot connect to the WiFi unless I stand right next to it. Can't connect to WiFi anywhere (if you think it's the router in my house), even though the device detects the router. Sent it back to Samsung.
Click to expand...
Click to collapse
Hey, I experienced the same problem. But in my case, I am able to connect to the AP, if I am using a static IP address in the SGS3 instead of DHCP. Same router, no settings changed there. Just configured a static IP.
Cheers,
Jaegermeister
Same problem
Tried everything still not working, took it back to samsung they said it's working fine any other device is connecting without a problem but the S3 wont (i have 15 S3 with this problem)
Thanks
Bring back the phones to Samsung!
Sent from my GT-I9300 using xda app-developers app
I'm also frequently getting the "Network disabled. Poor Connection" message when at home. I have 2 wifi routers:
- Buffalo WHR G54S
- Draytek 2920n
If I turn wifi off/on on the S3 it sometimes resolves the issue, but not always. Sometimes after turning off/on it shows a status of "Connected"but there is no internet connectivity. If I then switch to the other router I can sometimes (but not always) connect successfully.
I'm running Checkrom v5.5, and have tried both the Perseus and Siyah kernels - both have this problem.

suddenly internet access is not working

my ROM is Jellybam, 5.1
since yesterday i havnt been able to connect to WIFI or to my mobile network.
for example the wifi, it says that it has connected to my router, but i still can't surf the internet.
same thing with the mobile network, it shows on the top of the screen that im on "H+" or "3g" but i still can't access the internet.
I've never had such a problem..what to do?
thanks.
U tried play store?
Sent from my iPhone using Tapatalk
check the access point on your phone to see if is pointing to the apn for your provider. To check access point go to menu - settings - more settings - mobile networks - access point names.
On wifi check your router to see if it sees your phone. The router may need a static ip or the router version is out of date and doesn ot support the wifi of your phone.
Omaxe said:
U tried play store?
Sent from my iPhone using Tapatalk
Click to expand...
Click to collapse
yes.
Cosmic Blue said:
check the access point on your phone to see if is pointing to the apn for your provider. To check access point go to menu - settings - more settings - mobile networks - access point names.
On wifi check your router to see if it sees your phone. The router may need a static ip or the router version is out of date and doesn ot support the wifi of your phone.
Click to expand...
Click to collapse
already done it. my mobile network settings(APN) are fine.
and i even tried to connect to my friend's wifi and still nothing. it connects, but there is no signal and i cant use the internet.
try calling your provider, your account may need to be reset to get rid of the problem with the phone internet.
To check on wifi you may need to try another kernal as there mabe an issue with the wifi files in the kernal.
but how is it possible? i had this ROM for 3 weeks and never had a problem with my internet connection. and i havn't changed my kernel or my modem since i flashed the ROM.
and the internet access and the WIFI problem had started at the same time. so i assumed that there's just 1 problem that causes the wifi and the network problem.
internet and wifi are seperate problems it is a coincident that they both failed at the same time.
Wifi software issues are located in the kernal. Internet issues could also be kernal or firmware related. These issues could strike at any time without warning.
We know it is not a hardware issue as it connects, so it must be a software isuue.
Cosmic Blue said:
internet and wifi are seperate problems it is a coincident that they both failed at the same time.
Wifi software issues are located in the kernal. Internet issues could also be kernal or firmware related. These issues could strike at any time without warning.
We know it is not a hardware issue as it connects, so it must be a software isuue.
Click to expand...
Click to collapse
i've flashed another ROM and the problem is fixed now.
thanks.

[Q] Strange WIFI connectivity issue...

Hey guys,
OK Ive got a strange problem with one of my Galaxy S3's!
It will not connect to some WIFI connections! It will say 'Obtaining IP address' then 'Failed to obtain IP address' and then loops itself doing the same thing over and over...?
I have two S3's and my other rooted device is fine. The one that has the problem is running a standard O2 4.3 rom (Un-rooted)
My rooted phone is also running 4.3.
Anyone experienced a similar problem? I have had this problem with 4 or 5 WIFI connections now, including my home one which is rather annoying! I have tried the obvious and rebooted my router, which hasn't helped!
Any advice welcomed!
asatdi said:
Hey guys,
OK Ive got a strange problem with one of my Galaxy S3's!
It will not connect to some WIFI connections! It will say 'Obtaining IP address' then 'Disconnect' and loop itself doing the same thing over and over...?
I have two S3's and my other rooted device is fine. The one that has the problem is running a standard O2 4.3 rom (Un-rooted)
My rooted phone is also running 4.3.
Anyone experienced a similar problem? I have had this problem with 4 or 5 WIFI connections now, including my home one which is rather annoying! I have tried the obvious and rebooted my router, which hasn't helped!
Any advice welcomed!
Click to expand...
Click to collapse
I've had issues with the quality of my internet connection being checked, and then the connection being killed due to "slow internet connection", even on strong Wifi networks. Solution turned out to be to uncheck the automatic network switch in the advanced Wifi settings.
rschalie said:
I've had issues with the quality of my internet connection being checked, and then the connection being killed due to "slow internet connection", even on strong Wifi networks. Solution turned out to be to uncheck the automatic network switch in the advanced Wifi settings.
Click to expand...
Click to collapse
Thanks but that doesn't affect me. It just wont connect full stop
happened to me too, sometimes its a router problem
objectd said:
happened to me too, sometimes its a router problem
Click to expand...
Click to collapse
How so, when I have an identical phone sat right next to it with the same version of Android and that phone connects perfectly?
The only difference is one phone is rooted, the other is not (Both running 4.3, just different kernal number and build number)
Well wifi is a function of the kernel .

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