Develop Bugs

[Q] Wifi stuck "turning on" - Galaxy Nexus

Hi all,
I recently sent my GN (Running 4.0.2 stock, yakju build) back to be repaired because my phones wifi stopped working. what happens is that the phone's wifi seems be stuck "turning on", but never actually does. No wifi icon or anything appears. wifi hotspot doesnt work either. I had my GN from about a week after it was released (I'm in australia so that was about the 22nd December), and around the 15th January is stopped working. This issue cannot be fixed with a reboot, a hard reset, flashing stock roms, toggling airplane mode or anything trivial like that, as I (and others) have tried.
Now i have searched a while on google while i have been without my phone and I'm finding this problem is surfacing for other people too. From what i have seen there seems to be a correlation between 4.0.2 and this issue. Also, it seems to happen some time into the phones life; they do not have this issue when first purchased. I am concerned that this may be a recurring issue which surfaces over time, due to a design flaw or some sort of software issue. If so, this problem will start affecting a lot more people. If anyone who reads this has the same problem, could you please post when it started occuring and what rom, build etc (and anything else which may be helpful) you are running so we can shed a little light on this issue. which many more users i am sure will experience. cheers in advance

just incase anyone actually reads this Galaxy Nexus was sent back, and it was found that the printed ciruit board (PCB) needed replacing. More forums have surfaced since i last checked up on this problem so numbers are slowly rising. Once again, post here if you get the issue, we need numbers

Hi same issue i have butni solve i am living in turkey and i use habertürk news and i saw this application make notification wifi turning om.i reset my phone i load factory firmware but nothing happen ...always say wifi turning on...you need to change your system language another still write wifi turning on on screen in eglish and a application cause to this like my haberturk app
Sent from my Galaxy Nexus using XDA

same problem
Hi,
i had the same problem, wifi mac info was not showing anymore on the Nexus. Reboot and factory reset didn't help. Wifi wouldn't come on anymore.
Ask for a replacement, that's the only thing you can do

Can i ask what version of android you guys had? I'm wondering if this is going to be a recurring problem with hardware due to software issues or if it is purely a design flaw (PCB burning out, etc..) Cheers!

I have the same problem which happened last Saturday and it frustrated the hell out of me, i flashed to different versions of OS....didnt help...
restored to factory firmware and didnt backup the pictures and stuff on the phone!! (FML)
and brought it in to Fido on monday to have it serviced....
talking about bad luck...sigh....
they told me the turn around time is 10-15 business days... (N)
will report back once i hear from them

Before the issue happened, did your phone have any other issues? Say heating up while charging or running the WiFi?
I received a device in for repair with this issue and the customer reported it got really hot before the issue started happening. Everything looked fine on the motherboard - the WiFi antennas were intact. Reloading the software did nothing which means it's a hardware issue..
So very strange. I wonder what's causing this.

i remember when my wifi stopped working i was running 4.0.2. I was actually on holidays in Japan at the time and i was wifi hopping quite a lot around the airport (i was walking around and the wifi would go out of range, latch on again... etc) not sure if that had anything to do with it. Hopped on the plane home and i remember i was on airplane mode using an app called colornote. the phone hung pretty hard and i had to pull the battery. rebooted and tried again and after 10 mins, phone crashed again doing the same thing. Got home and the wifi wasnt working. Not sure if any of this had anything to do with it, but maybe. Didnt notice any overheating, but then again i was around snow haha

hi mrmiklepower
just wondering if your phone has been good since you got it back from repair?
i noticed the phone would reboot itself over and over again after i flashed it back to the stock rom. I just called the third party repair shop that my carrier sent the phone to, they told me its still being fixed.
Oh i hope they will return me my phone soon.

My phone is actually still being repaired also. It's been a total of 2 months since i sent if back! they contacted me and all i know so far is that the phones PCD needed replacing. when my phone arrives i will update as soon as i can. should receive it sometime this week, but its not certain. the majority of my ownership of this phone has been me waiting for its return

Holy mother of lord...
I actually called the third party repair shop that my carrier uses to check on the status of the repair. And they told me its actually In quality control which means the problem was fixed and they're just testing it before they send it back to the store where I brought the phone too. Hoping they'll send it in on Monday so I can either pick it up on the day of or the next day.....keeping my fingers crossed.
Will keep you posted on the status of it too.
Sigh

Ok I got my phone back today.
on the reference sheet I got from the repair shop
it states REPLACED PBA, BGA Failure
I looked it up online and PBA means Printed Board Assembly
which probably means the motherboard was defective and had to be replaced.
and now the phone is working fine. So i guess when this phone was made, there were some flaws with the motherboard on it, thus causing this problem.
Anyways, I hope this information helps with others who experience the same problem

Thanks for letting us know! O got mine back today with the same thing. So looks like there is no way of fixing besides sending it back. Good luck to anyone else who gets this problem
Sent from my Galaxy Nexus using xda premium

So it seems there's no fix for this?
I've been doing some research and it doesn't seem anyone can fix this.. I tried reflashing, wiping every possible thing, etc.. even flashing the stock software via odin. Still no luck.. It seems that we are indeed stuck with sending it back in for a supposedly defective part which seriously blows.
My other question is.. you guys who already received your phones back, did anyone end up with the problem again?
PLEASE if anyone knows how to fix this.. chime in!!!

I had an issue similar to that with my transformer and to fix it I just flash a new kernel im not sure itwill fix the problem for you but it's worth a try
Sent from my Galaxy Nexus using xda premium

Since getting my phone back the problem has not occurred again. I don't think there is anything that can be done as a component needed to be changed apparently. Good luck :/

Zeon45 said:
I had an issue similar to that with my transformer and to fix it I just flash a new kernel im not sure itwill fix the problem for you but it's worth a try
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
Thanks, when returning to stock it flashes a new kernel. Also tried it again for the hell of it with faux's kernel, still no luck .

This sucks! This very same thing happened to me yesterday! I Odined back to stock.. no luck! Now after finding this thread, it looks like a hardware issue! That blows! I'll have to give Sprint a call tomorrow!

Hmm sucks to hear it's still cropping up around the place, I heard someone say this issue entered quality control. But anyway, if it helps I've had my phone back for about a month and a bit and its still going strong. hopefully it doesn't happen again though. good luck, hopefully it won't take too long for your phone to come back!

Hi,
I'm with Telus in Canada and had the exact same problem and had my GN repaired. It took only 2 weeks and I just got my unit back. I had already read a lot online about this issue so I asked the Telus rep to tell me what the issue was. She told me that the report states that the board was replaced. This is definitely a hardware problem. I'm hoping that the new board doesn't have this problem and my phone won't need to be repaired again,
I run 4.0.1 on my phone. Telus hasn't released an update yet. I was going to update mine by switching to yakju, but that's when I noticed that the wifi is not working and I thought it's not a good idea to change the stock ROM.

Barley will get singal

The other night my phone randomly shut off and would not turn on for like 8 hours. When it did, it got SUPER hot in the back where it would just about scald your hand. It shut off again and i got it back on in a few minutes.
But my problem is ever since then I have not got good signal at all where I use to get full signal. I dont't think it's ever connected to 3G either. And i can't get enough signal to place out calls.
My wife has the same phone and since i have flashed it, ive never got as good signal as here. Which im guessing the problem is my radio is a lot older version then her's. I just dont know how to succesfully update the radio.
But my main issue is that i have little or no signal in places i got good signal until this happened. Is it possible that this ruined my anteanna or something?
Carrier: Bluegrass Cellular
Current ROM: MIUI-110070 (also tried cynageonmod and the original sense UI)
Baseband version( assuming that means radio) 2.05.10.08.11 (wife's radio version is like 5... or 7... something)

something i just noticed.. Network says US Cellular, but i have bluegrass. But im just assuming that has something to do with me running MIUI instead.

Needing help!

But my main issue is that i have little or no signal in places i got good signal until this happened.
Click to expand...
Click to collapse
That's the main issue here and that's what we should focus on.
The Desire overheating issue is a known one and it's mostly related to a faulty mainboard. It's patched by underclocking/undervolting or completely fixed by replacing the mainboard. My best guess is that when you installed MIUI, thus replacing the stock kernel with one that can overclock the CPU, the CPU got somehow overclocked/overvolted and that caused the overheating thus damaging the mainboard. As i said, it's a guess; the mainboard could have easily failed by itself, as no tech is fault-proof.
Try replacing the ROM with a stock one and see what happens. If the problem persists, you could try flashing a newer radio (there are lots of guides here on how to do that), but mind you, it's not a recommended procedure for a damaged phone, as if the phone shuts down and the radio flash fails, you'll end up with a permanent brick.
There is a hardware fix you could try, but that involves taking the phone apart. It's not a very invasive procedure, as you need only undo a couple of screws and dismantle some plastic parts. Do a search for "antenna contacts fix" in the Desire section.

Many problems with my One X recently

Hey guys,
I have always been very satisfied with my One X, but it's starting to piss me right off.
Since the last update (1.29.401.11) the GPS isn't working with my phone anymore. In addition I have a yellow spot on my display which doesn't disappear.
Today I returned from my holiday abroad and I wanted to connect to my wifi network at home, but it just doesn't work. If I click "connect" nothing happens.
Seems like my formerly perfect working One X has turned into the most horrible one with every problem you could think of.
I did try a hard reset earlier, but it didn't fix the issues. Can I expect the problems to be fixed with the next update (4.04 or 4.1), or is it definitely a hardware fault?
Does anyone have any experience how long it approximately takes HTC to repair the phone? This is important, as I am planning to move to Germany soon and I am not sure if I should send the phone to HTC in Germany or the UK. I didn't unlock or root my phone, so I guess the warranty claim should be no problem at all. Do you think I can expect to receive a new phone instead of having mine repaired? as far as I know they will have to replace the display and the mainboard because of my problems, right? So a new phone would be the easier choice for them or am I wrong?
Thanks in advance for your help!

You could try to flash the latest RUU, some who had WiFi problems now say they are fixed.
Won't hurt to try.
RUU can be installed on stock locked devices, so maybe something to look into?
You can get the RUU from my Dropbox link.
http://db.tt/eYSlILnf
Enter fastboot on phone,
Plug in usb cable to phone from PC
Should now say fastboot USB on phone
Double click RUU on PC to install
from my HTC One X using Tapatalk 2

PCServe said:
Hey guys,
I have always been very satisfied with my One X, but it's starting to piss me right off.
Since the last update (1.29.401.11) the GPS isn't working with my phone anymore. In addition I have a yellow spot on my display which doesn't disappear.
Today I returned from my holiday abroad and I wanted to connect to my wifi network at home, but it just doesn't work. If I click "connect" nothing happens.
Seems like my formerly perfect working One X has turned into the most horrible one with every problem you could think of.
I did try a hard reset earlier, but it didn't fix the issues. Can I expect the problems to be fixed with the next update (4.04 or 4.1), or is it definitely a hardware fault?
Does anyone have any experience how long it approximately takes HTC to repair the phone? This is important, as I am planning to move to Germany soon and I am not sure if I should send the phone to HTC in Germany or the UK. I didn't unlock or root my phone, so I guess the warranty claim should be no problem at all. Do you think I can expect to receive a new phone instead of having mine repaired? as far as I know they will have to replace the display and the mainboard because of my problems, right? So a new phone would be the easier choice for them or am I wrong?
Thanks in advance for your help!
Click to expand...
Click to collapse
Since your on 1.29.401.11 you can flash the 2.17.401.2 RUU which is the latest from htc. You dont have to be htc dev unlocked to flash it. It might fix the radio issues that you are having. If not it might be a hardware problem so you would have to send it to htc. I have never sent any of my htc phones back for a fix (touch wood) so i cant comment on that.
You can find the RUU In this link http://forum.xda-developers.com/showthread.php?t=1543604 The thread does have mirrors for the RUU if you dont have a file factory account.
Hope it helps :cyclops:

Thank you so far! I just flashed the new RUU, but it didn't fix any of my problems.
The worst about this is, that I didn't know that a factory reset is performed during the process, I thought it's just like installing the automatic updates, so I didn't do a backup of my latest data. I don't blame you for that, I should have thought of that before flashing the new RUU version.
Anyways, I guess I will have to send my phone to HTC to fix the problems.

HTC say their max turn around time is 1-2 weeks I'd give it 3 just to be safe and plan from that.

Another problem I have now after the RUU update: My phone is always saying "Damaged phone storage" and it is asking me to format the sd card. If I click cancel nothing happens, but I can't access the storage at all. If I connect the phone to the PC it doesn't give me the option to choose "Disk Drive", there is just "Charge only", "USB Tethering" and "Internet Pass through".
As I have some important data on the storage, I need to access my phone storage before sending my phone to HTC or formatting it.
Any ideas how to resolve this?
EDIT:
I just tried to connect to my Media Link HD and it works perfectly, still I cannot connect to my home wifi network. This is a bit weird, as the Media Link HD connects to the phone via wifi as well, doesn't it?

Hi
PCServe said:
Hey guys,
I have always been very satisfied with my One X, but it's starting to piss me right off.
Since the last update (1.29.401.11) the GPS isn't working with my phone anymore. In addition I have a yellow spot on my display which doesn't disappear.
Today I returned from my holiday abroad and I wanted to connect to my wifi network at home, but it just doesn't work. If I click "connect" nothing happens.
Seems like my formerly perfect working One X has turned into the most horrible one with every problem you could think of.
I did try a hard reset earlier, but it didn't fix the issues. Can I expect the problems to be fixed with the next update (4.04 or 4.1), or is it definitely a hardware fault?
Does anyone have any experience how long it approximately takes HTC to repair the phone? This is important, as I am planning to move to Germany soon and I am not sure if I should send the phone to HTC in Germany or the UK. I didn't unlock or root my phone, so I guess the warranty claim should be no problem at all. Do you think I can expect to receive a new phone instead of having mine repaired? as far as I know they will have to replace the display and the mainboard because of my problems, right? So a new phone would be the easier choice for them or am I wrong?
Thanks in advance for your help!
Click to expand...
Click to collapse
Sounds like the antenna connection hardware fault that also can affect the GPS antenna. See the start of this thread for info. http://forum.xda-developers.com/showthread.php?t=1688538
Flashing ROMs is not going to fix it, it is a known hardware fault. I'm wondering if your phone has run hot or has been stressed/bent, for example in your pocket, this potentially causes the broken antenna connections and might also have caused the yellow spot.
Regards
Phil

After another hard reset the wifi is working again, still having the GPS problems and the yellow spot though.
I actually don't think I ever bent the phone, of course I carry it around in my pocket, but that's what a phone should be made for, right? However, if it was bent in any way will this cause any problems with a warranty claim? The yellow spot doesn't really bother me as it is barely visible, but I have purchased Navigon a while ago and I would like to use it with my One X now, so I wanted to send the phone to HTC sooner or later to get it fixed.

The other day I tried to use Navigon on a short trip (around 20 miles) without expecting a GPS signal at all.
After like 5 Minutes it suddenly picked up a GPS signal and Navigon worked fine for approximately 10 miles. Then it suddenly just stopped again.
Is this really a hardware issue? Any ideas how to probably get it fixed without sending it to HTC?

If a flash of new ROM and hard reset doesnt fix your problems, its most likely hardware issue. Like everyone said, just send it back to HTC.

One x is a crap phone. Worst HTC device ever
Sent from my HTC One X using xda premium

Emergency calls only - no sim card

After a month's use, my HTC didn't read the sim. I noticed that when the phone was face up it would detect the sim. When face down, the sim wasn't being detected. So i did the tape trick and it worked. Then i installed the GPE RUU and DIDN'T BACKUP. Then it suddenly wouldn't detect the sim. Sometimes it would and it would last for an hour or two. Then it wouldn't. I have the middle east version HTC__J15 but changed the CID to 11111111. I tried flashing radios to no avail. I don't think it's a hardware issue because it works for a while then the moment i unlock the screen it suddenly disconnects. What seems to be the problem? Please help.
Also, does anyone know what radio is should use for HTC__J15? Can't seem to find it anywhere.

tbc34 said:
After a month's use, my HTC didn't read the sim. I noticed that when the phone was face up it would detect the sim. When face down, the sim wasn't being detected. So i did the tape trick and it worked. Then i installed the GPE RUU and DIDN'T BACKUP. Then it suddenly wouldn't detect the sim. Sometimes it would and it would last for an hour or two. Then it wouldn't. I have the middle east version HTC__J15 but changed the CID to 11111111. I tried flashing radios to no avail. I don't think it's a hardware issue because it works for a while then the moment i unlock the screen it suddenly disconnects. What seems to be the problem? Please help.
Also, does anyone know what radio is should use for HTC__J15? Can't seem to find it anywhere.
Click to expand...
Click to collapse
Had a similar problem 2 hours ago! I trimmed the edges of the nano-sim. No problem since then

After i go into recovery and wipe cache/dalvik and reboot, i get phone service but it goes off after ten minutes. Tried safe mode, same thing. Deleted all apps, same thing. Uninstalled updates, same thing. Don't think it's a hardware issue. HELP!

mashk said:
Had a similar problem 2 hours ago! I trimmed the edges of the nano-sim. No problem since then
Click to expand...
Click to collapse
I'm having a similar issue as the op. when you say trimmed down how far did you go? Did you file it or cut it. All sides or just one?

pokedroid said:
I'm having a similar issue as the op. when you say trimmed down how far did you go? Did you file it or cut it. All sides or just one?
Click to expand...
Click to collapse
All sides yes. HTC also sent me a new tray. Have u flashed a custom ROM?
Sent from my HTC One_M8 using XDA Premium 4 mobile app

mashk said:
All sides yes. HTC also sent me a new tray. Have u flashed a custom ROM?
Sent from my HTC One_M8 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I guess i'll have to try cutting it down a bit. Sadly i don't think a new tray would work for me. I work at an AT&T store and tried one from our demo phone and another from a coworker's phone. My tray and sim work in their phones but neither of theirs will work in mine, so I think it's an internal problem. Yes I have flashed a custom ROM I had been on a GPe rom for several weeks when it started happening. Since then I have flashed an AT&T RUU to put it back to stock and it's still not registering. I know how to remove the "tampered" notice and lock the bootloader, but I'm worried that HTC will not repair my phone because it's S-OFF. I don't know what to do at this point.

pokedroid said:
I guess i'll have to try cutting it down a bit. Sadly i don't think a new tray would work for me. I work at an AT&T store and tried one from our demo phone and another from a coworker's phone. My tray and sim work in their phones but neither of theirs will work in mine, so I think it's an internal problem. Yes I have flashed a custom ROM I had been on a GPe rom for several weeks when it started happening. Since then I have flashed an AT&T RUU to put it back to stock and it's still not registering. I know how to remove the "tampered" notice and lock the bootloader, but I'm worried that HTC will not repair my phone because it's S-OFF. I don't know what to do at this point.
Click to expand...
Click to collapse
I think there's a way to return to S-ON. I think it's more of a ROM issue I guess. Try flash a different ROM like ViperOne. Should work.
Sent from my HTC One_M8 using XDA Premium 4 mobile app

I'll give it a shot but I'm not hopeful that a new ROM will help. I was on a custom gpe ROM when it started and now I'm on stock and it's still doing it. I really hope it works though I would love to get my m8 back. Now that I think about it the gpe ROM I was on was heavily modified. Who knows maybe I'll get lucky. Thanks for your help BTW.

pokedroid said:
I'll give it a shot but I'm not hopeful that a new ROM will help. I was on a custom gpe ROM when it started and now I'm on stock and it's still doing it. I really hope it works though I would love to get my m8 back. Now that I think about it the gpe ROM I was on was heavily modified. Who knows maybe I'll get lucky. Thanks for your help BTW.
Click to expand...
Click to collapse
Hey @pokedroid, did you had any luck with this?
I am running into the same issue as you folks. I have a developer edition from HTC.com website which I was using with an existing T-Mobile microsim that I myself trimmed into a nano-sim. It worked really well since April 1st week until last 3-4 days, where the phone would lose network and even when it gets on the network, it does not actually do any data access. Sometimes the 3G/LTE icon shows up, but no real data transfer happens.
I visited T-Mobile store, where they gave me a new nano-sim. They also did a "network-refresh", whatever that means and I even did a factory reset at home later, however the problem persists. I was finally convinced it was a phone issue, especially since the network works fine on my Nexus 4 (with a sim adapter). I was pretty much on the verge of getting it replaced by HTC (hope it is not too painful) thinking it has something to do with the RADIO chip hardware. I I have only used a custom recovery and rooted the phone, and have been running stock rom after briefly trying an HTC-base ROM for a few days.
However this thread gives me hope that there could be something else going on maybe with the sim tray and surrounding parts. Maybe the metal unibody design does not lend itself well to these kind of defects.
I did accidentally drop my phone a few times in last few days, and whilte it has a TPU case it probably only does scratch protection and not much shock protection and might have caused issues with the sim tray. I am hoping I get it resolved on my own, doing a replacement will be a pain. Let me know how it worked out for you.
EDIT: So I tried adding a few layers of transparent tape just on the SIM card, to increase it thickness. No change. Then I tried trimming the edge of the sim slightly. This made the SIM move around even when trying to get the tray back in, but I was able to get it in right after holding it a bit while sliding it in. However still do not see any change, though the data did turn on briefly while I held the phone upside down, but it stopped after 3-4 MB. Is there a way of knowing if the SIM is being read correctly or something else is going on. I tried installing a SIM Info App which does seem to be able to read SIM info even when network is not connecting, is this a definitive sign that RADIO chip has issues? I have not changed anything in terms of ROM or radio in past several months, and just did a factory reset, so that rules out a software issue (I think).

Does anyone know personally of someone who's had their phone returned by HTC because of it being rooted or s-off? I sent my M8 for repair, the camera lens was scratched up. They replaced them and sent it back. (Free) but here is the kicker, I had s-off, and running ViperOne rom with the custom boot-up and log-off screens. It came back, lens fixed, been returned to stock. This is not the first time I have done this. Samsung did the same too. Here is what I think they do:
1) Unpack phone
2) plug phone into a terminal that returns it to the latest stock rom
3) Look for and fix problem
4) Reset the phone
5) Pack it up and send it back.
That has been my experience 100% of all the phones I had exchanged, whether with Verizon, AT&T or US Cellular.

Oditius said:
Does anyone know personally of someone who's had their phone returned by HTC because of it being rooted or s-off? I sent my M8 for repair, the camera lens was scratched up. They replaced them and sent it back. (Free) but here is the kicker, I had s-off, and running ViperOne rom with the custom boot-up and log-off screens. It came back, lens fixed, been returned to stock. This is not the first time I have done this. Samsung did the same too. Here is what I think they do:
1) Unpack phone
2) plug phone into a terminal that returns it to the latest stock rom
3) Look for and fix problem
4) Reset the phone
5) Pack it up and send it back.
That has been my experience 100% of all the phones I had exchanged, whether with Verizon, AT&T or US Cellular.
Click to expand...
Click to collapse
Interesting experience there, and sounds like you have done it multiple times and with them returning the device without any hitch.
I personally never had to go for replacement so far, however this definitely makes me feel better about going about it. My HTC M8 is still showing the same problems as earlier and I have not quite been able to decide whether it is a bad sim tray or something else. I also wonder if my issue is different from @pokedroid and @tbc34 in that my SIM card is read for short periods, and LTE/3G icon shows up as well, but the data does not work and it goes back into out of network mode.
For replacement I will probably still see if going back to stock recovery/red warning text fix etc is easy enough, just in case I catch an HTC technician in a bad mood. EDIT In fact this other thread makes me want to be double sure I get phone back in full stock mode: http://forum.xda-developers.com/showthread.php?t=2723409 . Fort. I have a dev edition, so HTC can't really say that I unlocked bootloader (though I wonder if such data travels back to them from the device via internet)

I have that problem since two days. Sometimes the phone is okay and sometimes he says only emergency. I wiped all, flashed a new rom, I've also opened the device but it seems all okay. Do you have any idea?

CapraNorvegese said:
I have that problem since two days. Sometimes the phone is okay and sometimes he says only emergency. I wiped all, flashed a new rom, I've also opened the device but it seems all okay. Do you have any idea?
Click to expand...
Click to collapse
Try some Scotch tape on the SIM, on the side that doesn't have the gold contacts. Sometimes this will "thicken" the SIM so it makes better contact inside the tray (which is sometimes the reason phone will intermittently say 'no SIM').
Be careful you don't gum up the SIM tray with loose tape.
You can also try to get a new SIM for your carrier, and see if that works better (varying tolerances in the SIMs physical dimensions may help).

p600 wifi turning off on of on off on....

Ok this started last night, tablet has been working flawlessly for the last 6 months or more.
What happened was, I wasn't able to use the Internet. Just wasn't working. And every 20 seconds or so it would flash up at the bottom of the screen "connected to (my router)".
So I turned wifi off and on, which usually fixed connection issues, but didn't help. I also restarted router, even though my computer and my phone isn't having any issues.
So then I went to the wifi settings screen to see if there was any way to reset networks. What I saw was this:
If i turn wifi toggle on and watch the screen, it would scan for networks, find the list... Couple seconds pass... Then the toggle would switch itself off and back on! And then it would start looking and finding networks again, and then off and on, and etc etc.
I have tried a factory reset and cache reset.
I have also downloaded the 4.4.2 stock rom and installed using odin for a totally new install.
Still does it.
Any suggestions? Seems very strange. It's under warranty but it seems like an odd hardware fault, seems more like software but I dunno.
Help me xda, you're my only hope.

I've been searching the Internet all day trying to find someone else havin this problem... But I seem to be the only one. And noone seems to have any suggestions.
At the moment I'm having to consider a warranty dispute, but that means however many days/weeks without the tablet which I use on a daily basis.
Not ideal Samsung.

nirurin said:
I've been searching the Internet all day trying to find someone else havin this problem... But I seem to be the only one. And noone seems to have any suggestions.
At the moment I'm having to consider a warranty dispute, but that means however many days/weeks without the tablet which I use on a daily basis.
Not ideal Samsung.
Click to expand...
Click to collapse
Hey. I had the EXACT same problem. Even made a video of it and showed it to the service point personell. Turning on off on again and again, it also displays in the settings the switch just switches itself without any action of mine. It was a hardware defect. send it in and get a new one, better than being annoyed by it. Mine did it on a 5-10sec interval length...

Keks1234 said:
Hey. I had the EXACT same problem. Even made a video of it and showed it to the service point personell. Turning on off on again and again, it also displays in the settings the switch just switches itself without any action of mine. It was a hardware defect. send it in and get a new one, better than being annoyed by it. Mine did it on a 5-10sec interval length...
Click to expand...
Click to collapse
Yeh mines probably every 5-10 seconds...
So this is definitly a hardware fault? In which case I'll have to get in touch with john lewis and hope they will do an exchange in store. If it involves having to send it off to samsung and waiting for it..
Anyway thanks for replying to the question, shame it wasn't better news haha!

nirurin said:
Yeh mines probably every 5-10 seconds...
So this is definitly a hardware fault? In which case I'll have to get in touch with john lewis and hope they will do an exchange in store. If it involves having to send it off to samsung and waiting for it..
Anyway thanks for replying to the question, shame it wasn't better news haha!
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yeah sorry to be the one to tell you this is a faulty device but it seems like this unit ain't free of errors and there quality control is somewhat sketchy.
Which android version are you running? I am asking because I run kitkat and also have relatively ****ty battery life. I use it for university so I have the screen on and write notes during lectures. Usually it lasted 7-8hours but for about a week or two it now only lasts 4-5 hours of screen time which is really ****ty.
I read somewhere that this might be a motherboard issue and if it is it might be somewhat corellated to our wifi problem. In my case they replaced the wifi module and gave me back my "old" device but this is having bad battery life so I am thinking about sending it in (again). I did however root so I would have to make use of the warranty provided by the seller, not samsung itself, since my knox is tripped.
(in Germany the sellers also must provide 6months - 2 years of warranty and there was a judgement in Europe that rooting must not have any influence on wether your device still is under warranty or not. sadly this only applies to the warranty provided by the seller, not the manufacturer)

Is your BT on and are you connected to a 2.4 GHZ network?
If so, turn off BT
I get random WiFi disconnects and reconnects from 2.4 GHZ networks when BT is on but not connected. Though, Ive never noticed the wifi switch going off and on.

I am running 4.4.2 or whatever, kitkat anyway.
Bluetooth is off, I never use it on my tablet. I dunno what network type I'm running, might be N or might be B/G, but whatever it is it what it has been for months as I havent changed any router settings lately.
I have restarted the router twice already in case this was a network problem, but the network wouldn't cause the wifi to toggle off and on, it would just cause disconnects etc. Least I assume so. I may try this just in case but like I said the network type hasn't changed lately

John Lewis are saying they won't exchange it, it will have to be sent off to Samsung for "repair". Meaning I'll probably get sent back a refurbished second hand one with a dodgy light bleed screen, as I expect they have hundreds of those lying around now.
Oh and it'll be up to 28 days. For a premium and expensive device that's less than 6 months old this just isn't good enough.

nirurin said:
John Lewis are saying they won't exchange it, it will have to be sent off to Samsung for "repair". Meaning I'll probably get sent back a refurbished second hand one with a dodgy light bleed screen, as I expect they have hundreds of those lying around now.
Oh and it'll be up to 28 days. For a premium and expensive device that's less than 6 months old this just isn't good enough.
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I had mine replaced as well but dont remember wether I got a new one or just my old one repaired... should have written down the IMEI I guess :-/
you're from Bristol, don't the EU rights apply there? If so your retailer should be obliged to replace or repair the device.
http://forum.xda-developers.com/showthread.php?t=1998801
Anyways my replacement was done through Samsung and it took 6 days. But then again idk differences between UK and Germany...