WIFI won't switch on - at all - Android Q&A, Help & Troubleshooting

Hi,
I've run into a problem - the wifi on my Xperia Z1 Compact all of a sudden will not turn on at all.
The quick settings dropdown for wifi is completely un-responsive and in the main settings menu just slides to 'on' and does not change to blue.
The problem came out of nowhere, with no rooting, unlocking or anything.
So I tried updating the phone's OS - no help. I then did a full factory reset - no help.
I then resorted to running CWM and completely wiped the phone, including all caches and flashed CyanogenMod and there is still no wifi!!!!
This must be a hardware issue? The phone is out of warranty now, so what can I do?
Could it be some firmware or kernel update that I can do?
I'm pretty proficient computer and coding wise and I've flashed different roms to various phones before.
HELP!!!
Roscoe

Related

[Q] Samsung Galaxy SIII (GT-I9300) International Crashing And Rebooting

Hi, I'm having a curious problem with my S3 and I've been unable to solve it. I watched the "noob" video and tried searching these forums as well as a google search with various combinations of the wording for my problem. Nothing matching my issue turned up, I hope I didn't miss anything.
I recently bought a S3 second hand (yes, i know, i should have known better). It was rooted and running some kind of custom ROM when I first turned it on, but I was willing to deal with it until I double checked the procedure for getting it back to stock and starting again myself (nothing against the original rooting and flashing, just like to know exactly what I'm running).
When I purchased the phone I obviously checked that all of the main things worked - calling, texts, mobile data, wi-fi etc. I get home and connect to my home wi-fi and start checking things out and setting stuff up. The phone randomly rebooted. I carry on after the reboot and about 10 mins later, another restart.
To cut a long story short, there is something wrong with the wi-fi. If I turn off wi-fi in the settings menu and reboot, everything works great. No crashes, no reboots. If however I enable the wi-fi about 50% of the time it will crash while wi-fi is activating. The other 50% of the time, it will crash as it goes into the screen lock (either via timeout or pressing the button).
I've re-flashed to it's stock version of Android (using the 'Samsung GS3 Toolkit and Odin), same problem. Anyone got any ideas?
Thanks in advance
You can try updating the modem and RIL to the right version for your country, search in general forum. If it still reboots then try with another wifi source - I've seen some routers cause problems on client machines.
If you do a factory reset when you flash the modem, plus you have the latest stock ROM on board, then any remaining problems are probably hardware.
Test it fully after the factory reset, before you add any apps etc.
boomboomer said:
You can try updating the modem and RIL to the right version for your country, search in general forum. If it still reboots then try with another wifi source - I've seen some routers cause problems on client machines.
If you do a factory reset when you flash the modem, plus you have the latest stock ROM on board, then any remaining problems are probably hardware.
Test it fully after the factory reset, before you add any apps etc.
Click to expand...
Click to collapse
After much experimentation and flashing of various files to my phone I have further narrowed the problem. I've still not solved it, but getting closer I feel.
After a clean ROM flash it works like a charm regardless of how much i use the wifi etc. It's only after the first reboot that the trouble starts. It will begin randomly restarting. If I perform a factory reset from recovery mode, it works again, but starts resetting again after a reboot.
Any ideas?

S3 Help Needed! Broken ribbon?

Hi guys, recently my S3 started to play up on me. The screen started to flicker and would only stop when I touched (and held) the screen. From then, things have gone from bad to worse and the phone now features a completely black screen after it is powered on. Therefore I cannot see the startup animation or anything else (including the home screen etc) but can hear the notifications and vibrations.
I can fortunately use CWM as this is not effected at all and the screen works perfectly fine. I have flashed 3 different roms and wiped my whole device since the problem started hoping it was a software problem.
I have additionaly tried:
- Clear the Dalvick Cache
- Clear cache
- Wipe data/factory reset
- Wipe all SD card data (don't ask)
Hopefully someone can help I would really appreciated it. (Not enjoying using the old Symbian phone atm) :crying:
Thanks
Make sure you are flashing roms meant for your version of the device.Try changing kernel or flash the latest stock firmware available after a factory reset. This should replace every file on your phone. Any problem would be fixed by this. Secondly what CWM do you use? Is it touch? If so does the touch work? Not likely a panel issue if the display is working in CWM, Can be a digitizer issue causing the screen to act up.

Xperia Z2 stuck in bootloop with generic android / cyanogen runs without problems..

Hi, I have a strange problem with my Xerpia Z2..
After flashing a cyanogen mod to test it out.. it`s not possible for me to get a working generic Android system anymore.
The smartphone stuck in a caint of "bootloop" or, if it start android at last, it reboots after a short while automaticly.
The bootloop is like this:
Screen: Shows 10 sec. sony-logo -> than 2 sec. black screen -> than 5 sec. sony-logo -> than it starts from beginning..
The bootloop-lenght varied until it starts finally into android.. sometime it doesn`t come to that point, and it reboots for a very long period (until I get annoyed and shut it down)
I have trying the following things to solve that issue:
- Flashing several stockroms wirh flashtool (D6503_17.1.2.A.0.314_Generic DE.ftf / D6503_23.0.1.A.0.167_Customized DE.ftf)
- trying to reset the hole phone with the xperia "emma" tool
- trying to reset the hole phone with the pc companion software
.. in my opinion, the problem could be find in the bootloader/recovery.. I don`t think it`s a hardware issue, because cyanogen mod is still runs without problems. Maybe some cyanogen remains are still leftover in the bootloader, that don`t work with generic android versions.. that`s what I can imagine. (but i`m not an expert
I don`t get why flashing the phone doesn`t solve the issue., it almost seems that the flash process don`t touch the bootloader, to overwrite it with stock parameters (?) or does not fix that area which is responsible for that issue..
Phone status at this time:
Not root - not unlocked - no backup of TA - DRM Keys (The guy that I bought that phone from, saddly doesn`t do a backup /
Before you flash the stock rom, are you clearing the Dalvik cache?
Whenever I've been through instructions on flashing roms, that always seems to be a step, but I didn't see you mention doing that before flashing.
Lagamorph said:
Before you flash the stock rom, are you clearing the Dalvik cache?
Whenever I've been through instructions on flashing roms, that always seems to be a step, but I didn't see you mention doing that before flashing.
Click to expand...
Click to collapse
Hi, I did that.. the 3 checkboxes in Flashtool are always enabled (Wipe: Cache, APPLOG. Data)

Numerous seemingly unrelated issues

I've been having many software issues with my M4 E2303, ll try make this as short as possible:
I keep on having issues with every firmware I flash. A problem will go away after flashing, but a different one will pop up.
Please note all these firmwares are STOCK.
Issues include:
- Very poor wifi signal (Marshmallow ONLY)
- Wifi "freezing" (Seems like a wifi driver crash) (Lollipop only, fixed after reflash)
- OS Crash with soft reboot (lollipop, happened alongside previous wifi freeze, is still occurring on new firmware)
- Bluetooth not function (seemingly fixed)
The issue im currently experiencing is the OS crash, which occurs randomly with no discernible cause.
From what I can see, flashing with flashtool may well install a new OS, but it seems like it doesnt completely remove elements of the previous firmware. Is there any way I can flash and make sure all my system files are completely replaced by the new firmware?
UPDATE:
I installed stock android 5.0 and booted successfully, WiFi had an issue. I turned off the phone to let it charge and.... it won't turn on. Gets stuck in a infinite bootloop from which I cant recover. I've flashed it twice with different firmwares on the Xperia Flashtool and used the PC companion to do a software repair twice. Still dead... Left it overnight turned off and booted it in the morning, reached the purple waves and froze. Thats the furthest its ever got into a boot.
Don't soft reboot the phone, it's not recommended
Well my phone is actually Rebooting it self for no reason RANDOMLY i don't know why but it happened to me more than 5 times

How to deal with WiFi not finding any networks?

Previously I had a problem with my Moto Z randomly rebooting and some functions like battery stats or WiFi not working. After some time almost all these issues disappeared(I don't know why), except WiFi which still doesn't find any networks. I tried booting into safe mode, wiping cache partition and factory reset, but nothing helped. I'm running android 7.0. Is there any way to install previous software version/completely reinstall current one without voiding the warranty? I think this might help in this case - otherwise it must be hardware issue and I have to send my phone to repair anyway.

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