WiFi module won't even turn on - Xperia Z4 Tablet Q&A, Help & Troubleshooting

Hi guys,
I have a serious problem on my Z4 Tablet LTE. It's running latest 6.0, but from some time I am having problem with wifi module. It simple doesn't turn on, it freezez on "Turning on..." screen. I've tried almost everything from factory reset to Xperia Companion Firmware recover. Unfortunately, nothing fixed the problem.
I am thinking of downgrading to lollipop, is it possible without root? I don't want to root the device, since if downgrading doesn't fix the problem, I will have to send the device to warranty.
After some research on the topic, I've found out that It's more common issue on Z4 tablet, someone has even recorded how the issue looks like. However in my case tablet doesn't reboot. Here is the link:
LINK

UPDATE:
It was an hardware problem. I've got my Z4 tablet replaced on warranty.

Related

L9 P760 Wi-Fi stopped working.

Hi, i bought l9 from orange romania 3 months ago. since then, in the first month i managed to update it to official Jelly bean, unlock bootloader, install CWM, and then ofcourse, root. everything went fine except until yesterday when the Wi-Fi suddenly stopped working. When i tried to turn it on it was stuck at Turning Wi-Fi on. I even tried installing CyanogenMod 10.1 on it, with no luck.
After my unsuccesful attempt with cyanogenmod, I also tried restoring a rooted CWM backup of a stock rom. Same problem, wifi doesnt start at all. What should i do?
Thanks in advance!
I had the same problem but I don't remember how I solved it exactly. I have done something in service menu or installed brand new one with kdz.
Try this: http://forum.xda-developers.com/showpost.php?p=41486538&postcount=3
It didn't work. Same problem. Wi-fi hanging at "Turning Wi-fi on". Also, wi-fi mac address , under settings is "unavalaible" and i can't even turn on Wi-fi tethering. Flashing Original KDZ is my last chance. I'll be back with a response as soon i'm done.
L9 stuck "turning wi-fi on"
ccs16rocks said:
It didn't work. Same problem. Wi-fi hanging at "Turning Wi-fi on". Also, wi-fi mac address , under settings is "unavalaible" and i can't even turn on Wi-fi tethering. Flashing Original KDZ is my last chance. I'll be back with a response as soon i'm done.
Click to expand...
Click to collapse
I also have an L9 and started having the same problems last night around the time of your original post. The only difference is that I haven't rooted the phone. There have been recent android updates, however. Any more suggested solutions?
Thanks.
Well, i think there is nothing left to do other than sending it to warranty. I'm still open for suggestions.
ccs16rocks said:
Well, i think there is nothing left to do other than sending it to warranty. I'm still open for suggestions.
Click to expand...
Click to collapse
kdz didn't work?
take a look what logcat is saying
This is what logcat is saying. Another question. It is safe to flash v20.kdz using offline method for fully returning to stock?
Sent from my GT-I9300 using xda app-developers app
LE for users having the same problem. After sending it to warranty they changed the "faulty" motherboard. Now wi-fi is working just fine. Seems that i've got a problematic unit in the first place. Even though i unlocked the bootloader they changed it under no fees.

[Help] Lost IMEI after update to , and downgrade

Well, received my Sony Xperia Z Ultra C6833 a couple of days ago.
Received a notice on the OTA, upgraded to 14.1.B.2.257
I encountered random restart issues whenever Wifi is activated, so I thought, fine.
I finally have access to my computer, installed the PC companion, it prompt me with a new 14.2.A.0.290 update.
Again, I updated my phone, hoping it'll fix the Wifi problem.
After restarting, I did a test, as usual. Wifi problem persists, and what's worse, a new problem. Wifi and Playstation 3 SixAxis controller connected using bluetooth didn't play nice, caused my phone to reboot.
I know a lot of people downgraded the firmware back to the previous version, with NAN backups etc.
And some even managed to restore their IMEI back to normal.
But for my case, I haven't root my phone, attempt to downgrade it using Flashtool, lost my IMEI.
Seems that I have no choice, but to return it back to 14.2.A.0.290 praying that it works, and I still can't see my IMEI.
No, I don't have a NAN backup. That's the part which gave me a headache. I've messed around with HTC one X (a year ago), never had this problem problem before, and it's something new I've learnt from you guys today.
Tried cyangenmod's boot.img, doesn't do me any good.
Anyone managed to recover their IMEI here?
Otherwise I might have to get it back to the dealer for a replacement.
Update: Thanks to krabappel2548's guide, I've managed to flash it to 14.2.A.0.290 again and got my IMEI back, but SixAxis still won't play nice with Wifi, and the problem with random reboots while Wifi is ON still persists.
we have the same issue, mine happened during the old update, after ota wifi gets stuck, wont turn on and reboots the device. upto now its still not fixed. 3 updates have passed and still the issue persist. hope you find a fix it will help me too. tried everything from downgrading, flashing custom rom,kernel, upgrade, unlock, relock but still cant fix it
I guess i'm not the only one then. I can live with the wifi issue for the time being as long as i stick to using data. But i fear it's going to affect tethering should i need that.
Please take a look at this post, it may help you. --> http://forum.xda-developers.com/showthread.php?t=2573349
nopponm said:
Please take a look at this post, it may help you. --> http://forum.xda-developers.com/showthread.php?t=2573349
Click to expand...
Click to collapse
Read it the moment I discovered that my IMEI is missing.
I tried reflashing excluding the baseband, doesn't work for me, right after i realized i have a missing IMEI.
Read up on the android emulator, but haven't tried it, as my computer is kinda old, took forever to run it. Will try it once I get my hands on a faster computer
Bah. Crashed when I tried to use my qx100 which i've just received. Haha. Anyone else has any fun with qx100 and z ultra combo? The Z ultra almost reminds me of my ex-girlfriend.
Meanwhile, I can't wait for kit Kat, and hope they really squash these bugs
The best thing would be to contact Sony and make them aware of this bug. Losing your IMEI by simply updating should never happen and it's quite a serious bug.
Actually i lost it after downgrading. Downgrade is simply because of phone keeps rebooting after I turn Wifi on.
LordManhattan said:
The best thing would be to contact Sony and make them aware of this bug. Losing your IMEI by simply updating should never happen and it's quite a serious bug.
Click to expand...
Click to collapse
let's hope this is the answer : p
New build 14.2.A.1.114
abuihsan said:
let's hope this is the answer : p
New build 14.2.A.1.114
Click to expand...
Click to collapse
I certainly hope so too.
Hope it fixes the rebooting issue with WiFi enabled.
Or the Google Play Edition port if it does fix the problem too
Anyone tested the new update yet? Does it fix the wifi issues with crashing/rebooting?
ok so i purchased my phone on amazon and got it somewhere around feb 25th, i got a message on the phone to update software so naturally i did, then i discovered what rooting does and i decided to follow some youtube instructions to flash my phone to an earlier firmware the link wasnt working so i found another which was C6802_14.1.B.0.475_GENERIC Hong Kong.ftf after flashing this i lost my imei its all zeros and i then tried flashing C6802_14.1.B.1.526_M3dD0g.ftf with no luck so im trying to find out what the updated software was that i must have downloaded when i first got the phone given the date i had recieved it im thinking that the 14.2.A.1.142 is the correct one that i must have updated to, i was running version 4.3 jelly bean before all this happened i also have this problem where everytime i turn off the phone and turn it back on it is in the chinese writing again and asks me to select my language again anyone know what to do short of return the phone while i still got time my internet is extremely slow im tired of it taking 4 hours to load a new ftf just to find out its not the right one ive heard some where hving success with the 290 getting their imei back but im thinking thats the software they started with or updated to to get it back so i have no idea which one i started with or which one i updated to all i know is the date i got it and that possibly its the 14.2.A.1.142 looks really familiar im downloading that one now so we will see what happens and i also read something about flashing excluding the basebands so if that is part of it please make it as clear as possible im obviously a noob but im learning quick
Pleas dont ask the same question in multiple threads.
See my reply to the other thread you necromanced

[Q] Wifi stuck on "turning on wifi" after doing a factory reset :(

Hi! ive been browsing the net for almost 2 days looking for a solution to this problem. the other night, i did a factory reset on my PANTECH FLEX OS 4.1.2 non-rooted. Wifi was working fine before that. after the reset, wifi would now only show "turning wifi on" whenever i turn it on. i've seen threads regarding this but none with the Flex. PLEASE HELP AS IM REALLY DESPERATE
I've done factory resets, hard resets airplane mode tinkering and the like butthey dont work. i've been reading that one effective solution would be too flash the wifi in my device but i would need to root it. is there any other way to fix the wifi again without rooting it yet? i was thinking of doing a downgrade to ICS to try and fix the wifi but im not sure if that would work.
sirfir said:
Hi! ive been browsing the net for almost 2 days looking for a solution to this problem. the other night, i did a factory reset on my PANTECH FLEX OS 4.1.2 non-rooted. Wifi was working fine before that. after the reset, wifi would now only show "turning wifi on" whenever i turn it on. i've seen threads regarding this but none with the Flex. PLEASE HELP AS IM REALLY DESPERATE
I've done factory resets, hard resets airplane mode tinkering and the like butthey dont work. i've been reading that one effective solution would be too flash the wifi in my device but i would need to root it. is there any other way to fix the wifi again without rooting it yet? i was thinking of doing a downgrade to ICS to try and fix the wifi but im not sure if that would work.
Click to expand...
Click to collapse
UPDATE: I just found out that the phone was rooted in the first place, assuming that superSU is only installed if a phone is rooted. This was just given to me so i had no idea that it was rooted anyway i checked to see if the phone is still rooted by running root checker basic and it says that it doesnt have root access anymore. Did i just un-root the phone? and how do i get back my wifi?

Wifi & Bluetooth not turning on.

Hi guys and gals,
I've had a problem for a week or so, neither my wifi or Bluetooth will turn on. I originally started getting intermittent errors such as "Unfortunately, Bluetooth Share has stopped" in connection with Android wear app. These errors started to roll over to new roms following *complete* wipes.
I've re-locked my bootloader, repaired to complete stock 23.4.A.1.264 with no joy. I'm at a loss now and I'm wondering where to go next, could someone advise me before I return for a warranty repair?
Cheers!
D_JWhite said:
Hi guys and gals,
I've had a problem for a week or so, neither my wifi or Bluetooth will turn on. I originally started getting intermittent errors such as "Unfortunately, Bluetooth Share has stopped" in connection with Android wear app. These errors started to roll over to new roms following *complete* wipes.
I've re-locked my bootloader, repaired to complete stock 23.4.A.1.264 with no joy. I'm at a loss now and I'm wondering where to go next, could someone advise me before I return for a warranty repair?
Cheers!
Click to expand...
Click to collapse
I had the same problem before.In my case,wifi chip burned off.They will give you a new motherboard.Just wipe everything and leave no evidence it was rooted or that it has any other customisations which voids warranty.My advice,dont wait for a fix.there is none.
goaway1234 said:
I had the same problem before.In my case,wifi chip burned off.They will give you a new motherboard.Just wipe everything and leave no evidence it was rooted or that it has any other customisations which voids warranty.My advice,dont wait for a fix.there is none.
Click to expand...
Click to collapse
Thanks for the heads up. In my case, I got wifi yesterday, but only briefly. I found that on other phones (nexus) there's what's known as a persist partition, and this can sometimes become corrupted.
Logcat says my Bluetooth and wifi are still there, just there's something going on at the software level that I can't figure out. I'll try the method above today then it's back to Sony for a warranty repair.

Wifi is stuck, can't be activated.

Hello,
my girlfriend owns a Xperia Z4 Tablet running Lineage 14.1. However some weeks ago after a restart her wifi failed (at this time the tablet was still running latest official firmware). Since then wifi cant be activated anymore. Currently the value "02:00:00:00:00:00" is shown as the wifi mac address, which seems like a common andoid MM problem. I tried several factory resets, restoring with the official Xperia companion tool and flashing LOS 14.1 but nothing helped so far.
Does anybody have any further ideas how to fix this issue?
Thanks for your help in advance.

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