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[Q] wifi intermittent

I have had my Galaxy S 4G about 1 month now and I'm a newb to Android. I've not rooted or done anything other than load more apps from the Market to try and learn more about this phone. It is out of the box stock as of 9/2011
My Wifi shows that it is on and logged on to my router at home and when I run the SpeedTest.net app it shows that ping works (though slow) and then the download runs but then times out with a network error.
All I do is toggle off the wifi and then back on again and try it again and suddenly it works fine for some extended time.
I have an I-pod touch that always works along with a laptop that has no issues with the 802.11 g connection from the same chair that I'm sitting in with the phone.
It is an annoyance to keep having to check for "quality of service" issues with an internet connection. You never know when you will have to toggle the service back on again or if you are just looking at a server issue on the other end of the connection
Is this a known problem with either Froyo, Samsung Galaxy or T-Mobile?
My config:
[t959v] = [SGH-T959V]
Firmware version
2.2.1
Kernal Version
2.6.32.9
Build #
Froyo.vuvkd1
Thanks in advance.

ggregor said:
Is this a known problem with either Froyo, Samsung Galaxy or T-Mobile?
Click to expand...
Click to collapse
Not to my knowledge. I had my SGS4G back in February before the KD1 update and never had the problem. It wouldn't be a T-Mobile issue as, whatever the problem is, is between your phone and the router. So T-Mobile is out of that equation.
Maybe try a factory data reset? Just a thought to see if it helps. I can't think of a good reason it would but it's just an idea. Given that you're not rooted nor running any custom ROMs or firmware I don't want to even think about pointing you down that road.
Have you tried it with more than the 1 router in the house? If it's a problem with wifi in general it could be defective hardware. If it's only with the 1 router then there could be other variables at play (type of router, security on it, & the SGS4G not liking that, etc.)
I'm rambling...but stumped a bit.

Called t_mobile support and once I got to the second level support person she had me stop by a store and get an updated Sim card.
My original card was 7 years old. I really didn't think that would matter, but so far it seems to have done the trick.
Sent from my SGH-T959V using XDA App

ggregor said:
Called t_mobile support and once I got to the second level support person she had me stop by a store and get an updated Sim card.
My original card was 7 years old. I really didn't think that would matter, but so far it seems to have done the trick.
Sent from my SGH-T959V using XDA App
Click to expand...
Click to collapse
Awesome. Glad you got it working.

WiFi is connected even when 20KM away from hotspot

As title says, I went to the theatre today and realized I still had 5 bars of WiFi when I was 20KM away from home, was this a one time glitch or is it a known problem?

sounds familiar....
hey there,
I'm down here in New Zealand with a both versions of device, X & XL
my XL has the problem you speak about.
When i leave my house, it takes for ever to disconnect, pain of course because the 3G or 4G wont flip on while it thinks it is still on wifi.
When i return to my home/SSID the device takes for ever to reconnect, if it even does. i go to the wifi settings, and the connection initiation is just cycling, end attempts to connect, over and over.
I've thought i had fix it once before, by installing a new RUU. I was on RUU 1.77.708.3 Asia, could only find 1.77.708.2.
this seemed to fix disconnection on departure problem, but the cycling and hunting continued when i returned.
I have since found that this must be linked to the bluetooth. I say this because while the wifi is hunting/cycling i flip off the bluetooth and the wifi reconnects within seconds. I tested this more and with bluetooth disabled i have no wifi problems at all, but with bluetooth on, its gives my problems.
The second issue is the bluetooth its self. unlike my flawless desireHD, i can only stream music to my car head-deck, when i get a phone call, the music cuts out like it should, but the phone audio doesn't happen, been like that from the get go. wifi was a problem all the time because this dodgy bluetooth was on all the time so i could listen to music in the car and hopefully one day take calls in the car also.
well i have good news for me, today i flashed CleanROM.3.Standard .
http://forum.xda-developers.com/showthread.php?t=1655011
Today for the first time I can take calls over bluetooth in the car. this is good news because i was certain this was a hardware issue, even it it is, i am confident it can be resolved in the software now.
I'll do a few drive-by's my house tonight to test this wifi, see if that got resolved also. I'll let you know the result later.
I tell you all this in-case our issues are the same, it might save you some time... maybe.
good luck with, and check that bluetooth theory because i'm dying to know if its a common problem.
Cheers

Thank you for that very detailed post.
I also have bluetooth running (connected) to my car and it works flawlessly but it may be a cause for the WiFI staying connected as well. I will turn it off and see how it goes as the week progresses and keep this updated as well.
I would also like to flash clean rom but I am using the Rogers variant so I am worried it might not be compatible.

an_xda said:
As title says, I went to the theatre today and realized I still had 5 bars of WiFi when I was 20KM away from home, was this a one time glitch or is it a known problem?
Click to expand...
Click to collapse
This has been a known problem since the HOX has been released.

an_xda said:
As title says, I went to the theatre today and realized I still had 5 bars of WiFi when I was 20KM away from home, was this a one time glitch or is it a known problem?
Click to expand...
Click to collapse
First reaction: It's not a glitch, that's just really good WiFi...
Sent from my HTC One X using xda premium

I did those drive-by's......
Me again...
I did those drive-by's of my house, unfortunately there is no joy for me, still the WiFi behaves the same as before.
Its funny, down here we have assumed that the X is the same as the XL apart from the cpu. But in reality they are two completely different machines.

So I turned off Bluetooth and the problem does not occur anymore, WiFi disconnects as needed but it is obviously not a permanent fix. Another problem is the WiFi being on and off with 5 bars swapping between 4G and WiFi...

CleanROM again......
OK, I was doing some more reading and have since found that the developer of CleanROM has released a GSM patch so the hotspot on his ROMs now work.
You might remember i said earlier in this thread that CleanROM.3 worked best for me but the hotspot didn't work so i couldn't use it.
Now i have CleanROM installed again, Hotspot works, bluetooth both Audio & Phone work, and the WiFi at this stage seems to be doing what it should without having to manually toggle the bluetooth on and off. No apparent bugs to report at this stage.
Software Info on phone says this version is built around 1.29.728.12. I don't know if that means all ICS version of that number are good or not, but again its a place to start. Its looking like some versions have the issue and some don't, this re-assures me that it can be resolved within the software. I don't mind testing this stuff, as long as the developers don't mind developing it, and its a good learning curve.... its all good.
Check this CleanROM work out, it could be your answer.
http://forum.xda-developers.com/showthread.php?t=1655011
I'll check back in in a day or so and update you on my WiFi situation.
Cheers!

Thanks again for all your research and assistance.
I have the Rogers variant, should be no problem flashing it to CleanROM correct? Also, for each new CleanROM update, I would have to wipe and flash again? Seems troublesome.
Can you advise on the process required to flash the ROM? I am new to Android and the steps in the thread is not as comprehensive.
Many thanks.

hi there, show you how to load roms, thats a big job for me....
...I'm new to this myself, but i know a tutorial that will save me a ton of typing.
you need to do 2 things first, before flashing roms.
1,Unlock your bootloader
2,Install clockworkmod
have a look at this ,
http://forum.xda-developers.com/showthread.php?t=1647272
Study this thread, very helpfull. He explains how to install clockworkmod on your device, once you have that done you are 80% there, and you only have to do this process once, once done, flashing roms will always be the last 20%, you never do this again.
Infact flashing roms and backing up your own rom is a very simply task. the commands are on a list, just choose them as you go. To backup, wipe, and flash a new rom takes me less than 10 minutes.
Go to you tube and look at this, this shows you how Clockworkmod works.
http://www.youtube.com/watch?v=XOQEmQYFEeY
dont be freaked out, take it step by step, you'll be fine.
I also started this thread, regarding working roms for this wifi issue
http://forum.xda-developers.com/showthread.php?p=27585586#post27585586
no one has replyed yet, but it might yeild helpfull info later on perhaps

Thanks, I will do this shortly. Will unlocking the bootloader or doing any of the aforementioned steps give me the tampered signature?

Yes
yes, your phone will be marked.
Boot loader will be marked "Unlocked" , even if you relock it, its just gonna say "relocked" . nothing you can do about that.
The boot loader will also say "tampered" if you update the rom, but that msg dissappears completely if you update the phone via an RUU.exe

Can this hurt me with regards to warranty requests? I know I can remove the tampered status by flashing a stock ROM but I am concerned re: bootloader.

[Q] wifi tether booting, hardware issue?

I've been trying to tether a tf700 to my S3's 4g connection while at my job for about two weeks now. The problem is after a little bit of time connected, the wifi tether will drop the tab. The connection on the tab will cycle between connecting, obtaining IP address and saved. I tried another device, a phone, to see if it was the S3 or the tab and it did the same thing, indicating a problem with the S3. Note: this issue has only come up when tethering at my job. I have not seen it happen at my house, though it may be possible.
I have tried several roms including stock, JellyWiz, CleanROM and others with the same result. I followed the procedure to return the phone to vzw warranty service as a way to wipe the phone and return it to stock settings. Running Foxfi, I still had the issue.
I got a warranty replacement S3 and have left it unrooted on stock (HE based rom). Using Foxfi I was able to tether successfully for hours. It's been nice. This leads me to think of two possibilities.
1. The wipe via Odin, relock, and OTA updates somehow still didn't fix the software issue on the old phone. This seems unlikely but I'm no expert. I would think Odin would clear everything but still the problem exists.
2. It's a hardware issue. This seems unlikely because my wifi works and I have not been able to duplicate this at my house. But there is no denying that the new device works great.
The big question is, can I root/flash on the new phone without fear of it winding up like the old one?

The new phone and tab just had the same problem - unable to tether. This is a first but I rebooted both and it has cleared up. This seems to be a software issue but it's really stubborn.

Samsung says it is a hardware issue. They are sending me my third phone. I hope this works or else I'm switching to another device.

Using native tether locking lockscreen open fixes it. Settings >lockscreen>Screenlock>None. If have 15 toggle mod there is a lock toggle. Best is to use Android wifi tether that now works for TW JB roms.
http://forum.xda-developers.com/showthread.php?t=1988735

Thanks for the reply. I tried it but unfortunately it only worked for about two minutes before falling into the fail loop. It should be mentioned that on the tab, I see the signal strength at full (since I'm three feet away) but when it's looping the signal drops to nothing on connect. I still have to think it may be a hardware issue.
I just hope phone #3 works as it should.

So far so good. Got the new phone and it's tethering with foxfi just fine. Not rooted yet and probably won't for several days. I'm actually wondering if I can burn this one up and get them to send me a DNA.

armus said:
So far so good. Got the new phone and it's tethering with foxfi just fine. Not rooted yet and probably won't for several days. I'm actually wondering if I can burn this one up and get them to send me a DNA.
Click to expand...
Click to collapse
My phone is having the same issue, how do you go about getting a replacement from Samsung?

[Q] Wifi XOOM 4.1.2 Wifi stuck in "Turning On..." state

Hi all,
I'm having a problem in turning WiFi on the Motorola Xoom with 4.1.2 Jelly Bean. The device stays stuck at the Turning on State and doesn't connect, I've let it sit for 7 hrs in the same state. I have done many things in through out these forums and have had no luck. I have done the fastboot -w and also done manual factory data resets, I also have rooted my device, by using a modified system image and a boot image over the 4.1.2 upgrade. I got this tablet in a trade with the knowledge that the WiFi worked at some point between GB and ICS. I am a software tester at Motorola and I have had much experience with mobile devices for almost a year now. I have ran radio and system logs on the loaded production builds and have found no discrepancies between my Xoom and other fully functional Xooms. I've even thought it was possibly a bad RF connection and opened the back of the Xoom and found that there is no issues there. I thought maybe buying a micro PCI network adapter would do the trick but nothing. I have successfully tethered using Bluetooth from my rooted droid 4, but this doesn't seems to fly with games by Gameloft. When booting Wild Blood for instance, after the initial licence check, the game requires to download the rest of the data through WiFi, and thus my problem begins. I even put the qawifionlymode.txt on the root of the internal SD card storage area (with appropriate capitalization and such) and nothing. Any help would be much appreciated.
Best Regards,
ArchAngel70120

Found out the problem
Hi all again, I'm updating this thread for anyone who passes by and wants the help I needed. Being that I work at Motorola I found the project manager for the Xoom tablets and had him take a look at it for me. He said that the problem wasn't with the WiFi, but the subsystem that controls the WiFi, he said that it was defective in this unit and that it was out of his hands to repair, when since this is the case I am out of luck But that's my case, if you have warranties, use them in this situation. You should be able to get either a refund or a replacement. I'm gonna go get my hands on another one now
Good luck everyone,
ArchAngel70120

ArchAngel70120 said:
Hi all again, I'm updating this thread for anyone who passes by and wants the help I needed. Being that I work at Motorola I found the project manager for the Xoom tablets and had him take a look at it for me. He said that the problem wasn't with the WiFi, but the subsystem that controls the WiFi, he said that it was defective in this unit and that it was out of his hands to repair, when since this is the case I am out of luck But that's my case, if you have warranties, use them in this situation. You should be able to get either a refund or a replacement. I'm gonna go get my hands on another one now
Good luck everyone,
ArchAngel70120
Click to expand...
Click to collapse
I was able to repair this state by wiping cache and formatting to factory settings.
I am using
Jellybean 4.1.2 XXLS8 ROM SGS2 GT-I9100
The wifi got stuch when i switched to data network mode and wifi got disabled automatically. Now it is working fine. might come in handy for anyone with same issue.

[Q] Wifi Problems

Hi,
Starting to lose my patience with this device now. Such as shame that this lovely piece of hardware is strangled by poor software. I've already put the device on ebay and withdrawn it because its so slinky and I really want the issue to be sorted. I have no option but to go with the ipad mini at this rate, it just works!
Using odin I've successfully upgraded to ICS with P6800DXLP8_P6800OLBLP7_P6800DXLP7_HOME.tar and XXLQ1_OXALQ1_ATO My wifi keeps dropping out, ive tried it on three different routers etc and still the same issue. Tried CM10 and that reboots on me. Ideally i want a stock rom that works without any niggles on my Euro p6800. Any ideas, i'm really trying to make Android work for me, ive searched the forums like a good boy but no real answers anywhere.
:cyclops:

I can't help but thinking... if you are fed up with the Sammy device, why not switch to something that is completely open, like the Nexus 7, instead of a closed ecosystem like Apple's? Seems like there are other (better) choices out there than the iPad mini.

I'm sorry you're having troubles. Please feel free to give me your tablet. I could always use two!
Barring that, here is what I would suggest that has worked for me:
I have always had "advanced WiFi lock" from the play store, and it appears to have improved WiFi performance even when I had ICS.
I had locerra's cyanogen 10 ROM for a spell and really liked it. I then did some research in the development section and found Daniel HK's Paranoid Android ROM v. 2.55 and have enjoyed it even more. WiFi performance has been consistent and stable on both custom. roms.
Do some research and have a go at it.
If not, i can give you my address as I am currently living in Mexico and you can ship it to me!

I didn't experience any wifi issues at all until today. I'm staying with a friend for the week in Canada, and wifi k3ps dropping out. It seems that only a restart will solve the issue, and the network then falls out of range(even though I'm next door to the router). I'll give the app mentioned a try.... But any other thoughts please let us know! I'm on the leaked ics rom from Open Austria, rooted.
Update: "Advanced wifi lock" app has solved the issue, thanks! But we shouldn't really need to download the app.. Any ideas of how to solve such issues natively?
Sent from my GT-P6800 using xda app-developers app

Correction, sadly the app didn't solve the issue.... Still having intermittent wife but HTC is connected constantly.
Sent from my GT-P6800 using xda app-developers app

Ensure you don't have BOTH 2.4 GHz & 5 GHz enabled on your router at the same time.
Use one or the other.
After disabling 2.4 GHz band, and using 5 GHz only on my Billion router, my device (P6810) had no wifi drop-out issue. Same if I use only 2.4 Ghz band only.
Hope it helps.......
BTW, I would suggest LP8, such as my SkyHigh ROM, having "fixed" wifi issue for most........ But try the above first

dogbreath said:
Hi,
Starting to lose my patience with this device now. Such as shame that this lovely piece of hardware is strangled by poor software. I've already put the device on ebay and withdrawn it because its so slinky and I really want the issue to be sorted. I have no option but to go with the ipad mini at this rate, it just works!
Using odin I've successfully upgraded to ICS with P6800DXLP8_P6800OLBLP7_P6800DXLP7_HOME.tar and XXLQ1_OXALQ1_ATO My wifi keeps dropping out, ive tried it on three different routers etc and still the same issue. Tried CM10 and that reboots on me. Ideally i want a stock rom that works without any niggles on my Euro p6800. Any ideas, i'm really trying to make Android work for me, ive searched the forums like a good boy but no real answers anywhere.
:cyclops:
Click to expand...
Click to collapse
Did you fix your issue in the end? I've tried changing settings on the Cisco Valet router to operate in just one wavelength but there is no such option... I guess it must be a old router. The wifi lock app didn't make much difference either unfortunately.
Sent from my GT-P6800 using xda app-developers app

nemov said:
Did you fix your issue in the end? I've tried changing settings on the Cisco Valet router to operate in just one wavelength but there is no such option... I guess it must be a old router. The wifi lock app didn't make much difference either unfortunately.
Sent from my GT-P6800 using xda app-developers app
Click to expand...
Click to collapse
Maybe you could check the router manufacturer website to upgrade its firmware.
Backup your router settings to PC first though...
Sent from my GT-I9300 using xda premium

UpInTheAir said:
Maybe you could check the router manufacturer website to upgrade its firmware.
Backup your router settings to PC first though...
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
Thanks, The firmware on my mate's Cisco router was out of date, wifi connection much better but it still cuts out and appears to only reconnect if I restart. Even a "quick reboot" from within Rom Toolbox Pro doesn't reconnect. Annoying issue... It even cuts out midway through a skype call with my wife (but no issues on mates ipad or my htc) Also no issue with my wifi connection back in the uk. Very weird. Any further ideas appreciated!
Sent from my GT-P6800 using xda app-developers app

nemov said:
Thanks, The firmware on my mate's Cisco router was out of date, wifi connection much better but it still cuts out and appears to only reconnect if I restart. Even a "quick reboot" from within Rom Toolbox Pro doesn't reconnect. Annoying issue... It even cuts out midway through a skype call with my wife (but no issues on mates ipad or my htc) Also no issue with my wifi connection back in the uk. Very weird. Any further ideas appreciated!
Sent from my GT-P6800 using xda app-developers app
Click to expand...
Click to collapse
Just wondering of the connection is secured? Does it cut out on open connection?
If secured, did you restore wifi settings with any particular app (ie. Titanium)? If so, you could try delete/forget wifi connection and manually enter the password instead
Or, delete/forget wifi connection in settings and restore with titanium backup. You usually have choice of "101" or "XML", try one then the other, reboot each time after restore.
Edit: if you have another device to set up a wifi hotspot, open and secured, and test?
Sent from my GT-P6810 using xda premium

It's a secure network, but i've tried forgetting the ssid and then reconnecting, but it makes no difference... Still patchy connection. I don't want to make the network open as it's my mate's network not mine.
I downloaded an app called "wifi manager" and it seems to be working 60% of the time, which is good enough for the moment. When I get back home to my own wifi network I expect no connection problems as it was working fine when I left last week probably the issues were due to my mates awful Cisco router and not the GTab!
Sent from my GT-P6800 using xda app-developers app

impression
I think it's the WiFi driver in the version of your ROM.
There is no reason you should be having to amend settings on a router because in most instances, you will not have access to a,ending the router.
I'm currently living in Mexico and I'm dependent on several WiFi access points around town and intermittent WiFi where I live. I can safely assume that the technology isn't the latest and greatest down here and I don't control any of those settings.
I am not experiencing the problems you are describing.

I think you're right, it is the wifi driver. I've just tried connecting to the open wifi network at Toronto airport, which connects fine on my htc, but i need to restart my GTab in order to connect to it. I'm running an official Samsung ics rom from the European carrier, Open Austria, (downloaded from samobile.com)... These issues only started when I left the UK and arrived in Canada. I'm wondering if the 3g roaming has some part to play in the error. Anyway.. I will try again when I get home, but anticipating issues.... How would I fix this? Do I have to reinstall the rom and all my apps?! (hope not, as I have this baby set up just perfect )
Sent from my GT-P6800 using xda app-developers app

nemov said:
I think you're right, it is the wifi driver. I've just tried connecting to the open wifi network at Toronto airport, which connects fine on my htc, but i need to restart my GTab in order to connect to it. I'm running an official Samsung ics rom from the European carrier, Open Austria, (downloaded from samobile.com)... These issues only started when I left the UK and arrived in Canada. I'm wondering if the 3g roaming has some part to play in the error. Anyway.. I will try again when I get home, but anticipating issues.... How would I fix this? Do I have to reinstall the rom and all my apps?! (hope not, as I have this baby set up just perfect )
Sent from my GT-P6800 using xda app-developers app
Click to expand...
Click to collapse
Maybe I overlooked it, but what is your current firmware?
Sent from my GT-P6810 using xda premium

Current firmware is the official ics from Samsung, build number Imm76d.xxlq2
Now I'm back home and wifi connects perfectly. I do suspect an issue of using wifi when roaming, but will keep an eye on it next time I go abroad again and post back if it happens again.
Sent from my GT-P6800 using xda app-developers app

nemov said:
Current firmware is the official ics from Samsung, build number Imm76d.xxlq2
Now I'm back home and wifi connects perfectly. I do suspect an issue of using wifi when roaming, but will keep an eye on it next time I go abroad again and post back if it happens again.
Sent from my GT-P6800 using xda app-developers app
Click to expand...
Click to collapse
Ah, that says it all...
Check my comments about LP8 firmware mentioned in my first post here..... way down the bottom Was obviously missed. Posts after that, I assumed you had, since you didn't comment about it.
There is also a thread relating to the problem and the subsequentLP8 fix.
Either flash SkyHigh ROM (P6800 DXLP8) or official DXLP8.
Whether just flashing the kernel from DXLP8 firmware world do the trick, not sure, as I have a P6810. But as I said, flashing the firmware package helped most out with the "wifi bug"
Do you have root and custom recovery?
Sent from my GT-I9300 using xda premium

Just got my 7.7 3g P6800 back from Samsung in HK... Replaced Motherboard under warrenty due to super brick.
They installed LP7 ROM and when i got it here had wifi issues...
Read about it and found recomendations to change to LP8 Rom...
Now have installed latest LP8 Rom form sammobile
Wifi issues have gone away....For a week...Now back again.
Just dropping out every few minuets and not in range etc...
my ROM is
Baseband version P6800DXLP7
Kernel version 3.0.15-1160935
[email protected] #3
SMP PREEMPT Wed Oct 31 15:10:33 KST 2012
Build number IMM76D,DXLP8
Is there anything wrong with this ROM or could anybody recommend a fix or alternate ROM?
Thanks and Regards..

Possible solution to WIFI problems?
I have had major problems with WIFI in my 7.7. The Austrian ICS has dropped connections, went totally berserk in some locations and stopped working unless rebooted.
I have now diagnosed (I believe) that the reason is the use of channel 12 in any WIFI router. If the router does not use 12 there seems to be no problems. At home I can configure my router not to use 12 and after that I have had no problems. There seems to be some kind of conflict or the Tab is faulty in that sense.
I do not know if this can be generalized, but at least for me it worked.

Yes I had the same problem with band number.... My friend's router that my tablet had an intermittent connection with, was on band 11. As soon as I got back home to my router in the uk (which uses band 6) My wifi connection problems disappeared.
Sent from my GT-P6800 using xda app-developers app

Yes I Can say after doing alot of reading i realised its the chanel.
im using locked chanel 5 and seems much better..also wifi connection manager from play store.
still not the greatest and low signal even in same room to router but working i suppose.
Just funny how my S3 has a much stronger signal compared to the 6800 every wifi ive ever used.
Would be good if somehow the wifi drivers from S3 could be used somehow?