Zony Z1 C6902 No signal - Xperia Z1 Q&A, Help & Troubleshooting

Hey guys. I got this problem:
One day in the morning the cellphone lost signal and never got it back. As i believed it was a software issue (coz the cellphone was on and suddenly signal dissapeared) i tried to flash a ROM and do a lot of stuff. In Venezuela we have no Sony Center. At the end my cellphone finished with CM11 and no IMEI. If u have any solution for this, I'll be really grateful. Thanks in advance for ur time.

Try wiping all data and flashing a full FTF using flashtool, if that doesnt work,then im afraid u r gonna have to get a new phone:good:
How many roms have you flashed anyway?
Provide some more detailed info about how and when this happened.does the phone detect the sim card?
Does the stock sony rom by any chance go on a reboot loop when starting ,because that happened to me when my old xperia z's baseband died:angel:
Good Luck,I hope you fix your phone quickly

masterofnocrack said:
Try wiping all data and flashing a full FTF using flashtool, if that doesnt work,then im afraid u r gonna have to get a new phone:good:
How many roms have you flashed anyway?
Provide some more detailed info about how and when this happened.does the phone detect the sim card?
Does the stock sony rom by any chance go on a reboot loop when starting ,because that happened to me when my old xperia z's baseband died:angel:
Good Luck,I hope you fix your phone quickly
Click to expand...
Click to collapse
Thanks for writting. It started suddenly, i though it was an update. I've flashed like 4 ROMS (dont remember which ones tho). The cellphone detects SIM Card but cant register to any network. When I installed other ROMS it got on a reboot loop. I also think maybe i have to get a new phone and use this one as a mini tablet. Once again, thanks for leaving an answer

edbk201 said:
Thanks for writting. It started suddenly, i though it was an update. I've flashed like 4 ROMS (dont remember which ones tho). The cellphone detects SIM Card but cant register to any network. When I installed other ROMS it got on a reboot loop. I also think maybe i have to get a new phone and use this one as a mini tablet. Once again, thanks for leaving an answer
Click to expand...
Click to collapse
Yeah,you are gonna have to get a new phone,
This is the same thing that happened to my old Z

masterofnocrack said:
Yeah,you are gonna have to get a new phone,
This is the same thing that happened to my old Z
Click to expand...
Click to collapse
Thanks for answering. Bad news tho

Flash full FTF of .757
That should help....I have this before...

Related

Xperia TX freezing & restarting after JB update

hi everyone....
my brother updated his xperia tx to jelly bean using flash tool before 3 hours... nothing showed in flashtool or the phone about any problem in flashing
in the last hour the phone started to restart & freeze
it's freezing suddenly & you cannot do anything but taking out the battery
can a factory data reset help?? also we have a backup on PC companion so is it recommended to return it on the phone??
Try repair option in PCC.
Tapatalked from my TX
i have problem using FXP212.
My TX goes in endless rebooting. Tried flashing again but same luck. I m downloading FXP210 to try now.
i did repair but its same thing i don't know what to do with it anymore, i would like help if anyone could give
should i downgrade to ICS and download again from PC companion?
smarda7a said:
i did repair but its same thing i don't know what to do with it anymore, i would like help if anyone could give
should i downgrade to ICS and download again from PC companion?
Click to expand...
Click to collapse
Did you do the repair or did you restore the backup?
Click on the update software option and then when it says you have the latest software click on repair my firmware
gregbradley said:
Did you do the repair or did you restore the backup?
Click on the update software option and then when it says you have the latest software click on repair my firmware
Click to expand...
Click to collapse
yea that what i did really twice already and i even reset the phone fully but im not sure whats wrong with it, it keep rebooting from time to time :/
smarda7a said:
yea that what i did really twice already and i even reset the phone fully but im not sure whats wrong with it, it keep rebooting from time to time :/
Click to expand...
Click to collapse
which one! I asked if you repaired or restored a backup.....
If you repair the phone it should be exactly like a factory shipped phone.
My only other thing to say will be have you got anything in your sd card (Both internal or external) that may be causing this? Any init.d scripts that reduce voltage etc...try deleting the contents of the sdcards and repairing again. (Obviously back anything up you want to keep)
gregbradley said:
which one! I asked if you repaired or restored a backup.....
If you repair the phone it should be exactly like a factory shipped phone.
My only other thing to say will be have you got anything in your sd card (Both internal or external) that may be causing this? Any init.d scripts that reduce voltage etc...try deleting the contents of the sdcards and repairing again. (Obviously back anything up you want to keep)
Click to expand...
Click to collapse
i did repaired twice from PC companion and did once i think from the phone itself, and i don't have Scards its only the phone internal storge..
when i did it first in flash tool it didn't give me any error and then i did repaired it twice from pc companion however whats strange in ICS i never had the reboot problem
and if i remember correctly it only delete the programs etc, but the photos/music etc it never left the phone with both options i did...
so you suggesting to also wipe internal storage and repair to see if it reboot or not? i already have back up for all stuff so it won't hurt to try
thanks alot really for helping and sorry for my bad english ^^;
If you have a backup then try it.
Have you got a bootloop or do you have some reboots? What i mean is, does the phone actually boot up and only reboot occasionally or is it just bootlooping?
gregbradley said:
If you have a backup then try it.
Have you got a bootloop or do you have some reboots? What i mean is, does the phone actually boot up and only reboot occasionally or is it just bootlooping?
Click to expand...
Click to collapse
nah it freeze and reboot when i use it after certain amount of time, sometimes when it reboot it doesn't even give me option to enter my password
the phone start up like there is no lock
I also have this problem with my LT30a. This started the very first time I flashed a Rom ( locked bootloader) that was meant for an LT30p. Sense then I have reverted back to my stock ROM, still have the issue but not so often.
Sent from my LT30a using xda premium
so now i did wipe to internal storage and did repair and such now im facing new problem the phone turn off and and when i try to switch it on...it wont work i have to remove battery and insert it again to make it work, any idea?
How this end up? Anyone has find a solution for this problem? I have xperia t with same problem. The phone mostly freezes and restarts on long listings like fb/twitter feeds, messages...
i have TX same on my device freeze and some times don't wakeup only when battery pulled out

need some advice water damage boot loop

Hi I need a little help
My sister has a xperia sp c5303 that she droped in toilet
Every thing seams ok with the phone just haveing trouble getting the phone to boot up
It truns on and I get both the sony and xperia logos and a little bit after that but then it reboots
I am able to re flash the stock rom useing the pc companion repair your phone
I was able to get the phone to fully boot once but when I truned it off it went back into the loop
I would appreciate any help and advice
few weeks ago got my xperia SP damage because i got caught in heavy rain.
my phone got into exactly situation as your sister's also,
because i cant shutdown the phone i just let it drain the battery till empty and leave it alone for 4-5 days without charge.
now the phone works without hardware proble, but the error sometimes still come (it just works ok for 1 weeks ago, till 3-4 hours it got into same reboot again)
i notice it works ok on recaf 4.4 ROM (not sure, but when i flash 4.2.2 or 4.3 ROM the reboots always come back) .
if its bootloader unlocked i suggest you flash kernel with recovery ( so if after few days you want to try to turn on the phone but it still reboots u can shut it down from recovery). thats my experience tho, good luck for your sister and sorry for my english.
Glenn160 said:
Hi I need a little help
My sister has a xperia sp c5303 that she droped in toilet
Every thing seams ok with the phone just haveing trouble getting the phone to boot up
It truns on and I get both the sony and xperia logos and a little bit after that but then it reboots
I am able to re flash the stock rom useing the pc companion repair your phone
I was able to get the phone to fully boot once but when I truned it off it went back into the loop
I would appreciate any help and advice
Click to expand...
Click to collapse
Come clean and go to a repair centre. The internal system is damaged and thats causing the boot problems. To fix this you need to get it fixed ;(
Dont know how much it can cost tho.
Put your phone in a bag of rice or that silica gel leave it there for 3-4 days. Make sure your phone is not waterlogged. wipe all of it with a towel BUT DON'T BLOWDRYER it.
FlashTool
Have you already use FlashTool to flash the software new ??? it
XplayerLP said:
Have you already use FlashTool to flash the software new ??? it
Click to expand...
Click to collapse
I have used sonys recovery flash tool
Glenn160 said:
I have used sonys recovery flash tool
Click to expand...
Click to collapse
But have you use This too?
http://www.flashtool.net/download.php
XplayerLP said:
But have you use This too?
http://www.flashtool.net/download.php
Click to expand...
Click to collapse
No but sonys one seamed to flah ok but I will give it ago willing to try anything

[Q] SIM-card(s) not readable

I've got a more or less big problem. My Xperia SP cannot recognize, that my SIM-card is inserted. If I turn it on it doesn't ask for the PIN and furthermore I can't receive or send SMS's, I can't receive calls or call somebody and I haven't got mobile data. I tried to insert my SIM-card in another sony phone and it didn't work. I also put another working SIM-card in my phone and it also couldn't recognize it. I think (I'm actually sure) it's caused by the non-functional phone apk, but maybe also the SIM-card is broken.
What shall I do? I have a TWRP backup, but I'm not 100% sure, whether it is from before or after. What is a less- or non-risky possibility to replace the phone.apkor is there a better method to repair the phone?
edit: I found out, if my phone is turned on and I remove the SIM-card, it realizes it, and reboots.
Please help me!
???
Sorry, but why is my post ticked with a hook??? The problem isn't solved yet!
Get a new sim card.. This will fix most simcard issues
mrjraider said:
Get a new sim card.. This will fix most simcard issues
Click to expand...
Click to collapse
First of All thanks for your reply. But I already took another SIM-card (which on Xperia L works fine) and put it into my device but there were the same problems. Yesterday I downloaded the SemcPhone.apk file, pushed it to /system/app and changed permissions to rw-r--r-- and rebooted. Then it asked for the PIN but after unlocking I got a bunch of Force closes and they didn't stop.. Even after rebooting again I had the problem, so I deleted the apk file again. But it's now the same like I described there above :/
Reflash ROM.. You have phone.apk problems aswell so this should fix it
Okay.. And the stock ROM, is this the "Deodexed stock ROM" (777MB) from android development or the "normal" stock ROM (odexed) (12.0.A.2.245) also from android development section?
No, to prevent any issues just open Sony Update Service (can be downloaded from the Sony website) and "restore" your phone..
So go back to full stock
Okay cool thank you I'll try it
Schokonuss said:
Okay cool thank you I'll try it
Click to expand...
Click to collapse
The last version of Sony Update Service misses the XSP.
I have contacted Sony Mobile to point this out. Untill we recieve a new update you need to use the PC Companion to restore your phone or you need to use Flashtool
mrjraider said:
The last version of Sony Update Service misses the XSP.
I have contacted Sony Mobile to point this out. Untill we recieve a new update you need to use the PC Companion to restore your phone or you need to use Flashtool
Click to expand...
Click to collapse
Okay, then I'll do that
:/
I tried it with PC Companion but when it had to start repairing and it booted the phone into flashmode (I think so, because the LED was green) and then PC Companion said: "The phone contains modified software, which cannot be updated" and below "Error 2003" ..
I tried it 2 times and both the same :/
My phone has unlocked bootloader, is rooted, and has the DoomKernel, no custom rom.
Schokonuss said:
I tried it with PC Companion but when it had to start repairing and it booted the phone into flashmode (I think so, because the LED was green) and then PC Companion said: "The phone contains modified software, which cannot be updated" and below "Error 2003" ..
I tried it 2 times and both the same :/
My phone has unlocked bootloader, is rooted, and has the DoomKernel, no custom rom.
Click to expand...
Click to collapse
Well that is unfortunate. You need to relock bootloader and reflash with flashtool.
You cannot use Sony software with unlocked bootloader
Sent from my C5303 using Tapatalk
Oh! That's actually bad. But then I first have to flash back the stock kernel, then relock bootloader, repair with PC Companion and eventually unlock Bootloader again if necessary for me, right? Just for being sure.
Yes correct you need stock kernel then lock bootloader,then re flash/repair phone
Sent from my C5303 using Tapatalk
Ok good. Now the last question: from where can I get the right stock kernel? I found a post from DoomLoRD, where he wrote, that you have to flash stock kernel.sin and no FTF kernel but I couldn't find a stock kernel.sin and in another post from alivanov79, alivanov79 posted a link to an FTF kernel. So Do you know which one is the right one?
Schokonuss said:
Ok good. Now the last question: from where I can get the right stock kernel? I found a post from DoomLoRD, where he wrote, that you have to flash stock kernel.sin and no FTF kernel but I couldn't find a stock kernel.sin and in another post from alivanov79, alivanov79 posted a link to an FTF kernel. So Do you know which one is the right one?
Click to expand...
Click to collapse
Hello! I hope you're still alive!
I am facing the same problem, but before I start doing stuff, may I know if your problem has been solved?
My Xperia SP as well on occassion doesn't detected sim card. Sometimes when I need to make phone calls the most, it starts to do it. I am planning to send it for warranty, as I am having another 20 days before the warranty expires.
Surprisingly, many Sony Xperia models users have experience of having a phone that doesn't read SIM cards. Google reveals it all.
TechnoSparks said:
Hello! I hope you're still alive!
I am facing the same problem, but before I start doing stuff, may I know if your problem has been solved?
My Xperia SP as well on occassion doesn't detected sim card. Sometimes when I need to make phone calls the most, it starts to do it. I am planning to send it for warranty, as I am having another 20 days before the warranty expires.
Surprisingly, many Sony Xperia models users have experience of having a phone that doesn't read SIM cards. Google reveals it all.
Click to expand...
Click to collapse
Hey,
yeah, I'm still alive
So, the thing is, my problem there had been caused by myself, fiddling around with some root stuff, so it hadn't been my phone's fault.
But what I did is I just flashed another ROM because I didn't see another solution and it really drove me crazy not being able to use the SIM card related functions.
Well, keeping your post in mind I don't think you'd like to flash another ROM (I probably shouldn't have done that, too).
So if you didn't already try to repair your phone with PC Companion, that'd be the first thing, I'd do in your case.
Otherwise I'd send it for warranty as you considered it already.
Yeah, my sister's Xperia L also has that problem and that's really unfortunate.
So I hope, my "advide" could help at least a bit although there may not be plenty of hints, but yeah.
If I shocked you with that essay I'm sorry, too
Schokonuss said:
Hey,
yeah, I'm still alive
So, the thing is, my problem there had been caused by myself, fiddling around with some root stuff, so it hadn't been my phone's fault.
But what I did is I just flashed another ROM because I didn't see another solution and it really drove me crazy not being able to use the SIM card related functions.
Well, keeping your post in mind I don't think you'd like to flash another ROM (I probably shouldn't have done that, too).
So if you didn't already try to repair your phone with PC Companion, that'd be the first thing, I'd do in your case.
Otherwise I'd send it for warranty as you considered it already.
Yeah, my sister's Xperia L also has that problem and that's really unfortunate.
So I hope, my "advide" could help at least a bit although there may not be plenty of hints, but yeah.
If I shocked you with that essay I'm sorry, too
Click to expand...
Click to collapse
Lol I don't think ROM flashing is the root problem, as I have been using CM11 for a month (and maybe more). The problem starts appearing lately..
I will flash stock ROM and relock bootloader and then reflash stock via PCC to see if it will fix the problem
Anyway thanks for the reply!
No, that's not even something to be called "essay"....

[Q] Xperia X8 brick?

Hello everyone!
I'm trying to fix my phone for 2 days still no success.
My problem is:
When i turn on the phone it does nothing,only the screen lights up for like 2-3 seconds after that it turns off.
It keeps doing it again and again until I take out the battery.
It cant even show the sony ericcson logo.
Battery works i tried it with another phone!
PHONE WASNT ROOTED OR FLASHED OR ANYTHING LIKE THAT
Solutions i tried :
Sony ericcson update service - no use
Flashing original firmware with flashtool - no use (btw flash mode works as long the flashing process works like charm)
Hope someone can help me out because there is no more warranty for the phone
Thanks in advance
Erik
erikserif said:
PHONE WASNT ROOTED OR FLASHED OR ANYTHING LIKE THAT
Click to expand...
Click to collapse
Probably a hardware issue, I guess it is time for a new phone.
stamatis said:
Probably a hardware issue, I guess it is time for a new phone.
Click to expand...
Click to collapse
Thanks for the answer!

Wifi never connects

Hello, I hope someone can solve me the following problem:
I've been with Validus and RR CM ROMs and one day my wifi stopped connecting to any network, I thought reinstalling the ROM would work, but not ... Today I've been doing full wipes and was the same. So my last chance was putting a STOCK but has not worked, so I do not know what else to do ...
When I try to connect appears:
- Connecting ...
- Disabled
- Saved
But never connected.
Thanks to that I can help with anything ...
Regards
josemolto said:
Hello, I hope someone can solve me the following problem:
I've been with Validus and RR CM ROMs and one day my wifi stopped connecting to any network, I thought reinstalling the ROM would work, but not ... Today I've been doing full wipes and was the same. So my last chance was putting a STOCK but has not worked, so I do not know what else to do ...
When I try to connect appears:
- Connecting ...
- Disabled
- Saved
But never connected.
Thanks to that I can help with anything ...
Regards
Click to expand...
Click to collapse
Try few of these.
have you tried connecting to different WiFi routers?
HAve you recently unlocked bootlader unofficially?
Yes, I have tried and the same, I unlocked months ago... Sometimes it connects (few minutes), I have tried to clean saved networks, wipe Google , recover WiFi from titanium backup... Now it is in authentication problem...
Yes, I have tried and the same, I unlocked months ago... Sometimes it connects (few minutes), I have tried to clean saved networks, wipe Google framework, recover WiFi from titanium backup... Now it is in authentication problem...
Maybe I have lost WiFi modules...
Hnk1 said:
Try few of these.
have you tried connecting to different WiFi routers?
HAve you recently unlocked bootlader unofficially?
Click to expand...
Click to collapse
josemolto said:
Yes, I have tried and the same, I unlocked months ago... Sometimes it connects (few minutes), I have tried to clean saved networks, wipe Google framework, recover WiFi from titanium backup... Now it is in authentication problem...
Maybe I have lost WiFi modules...
Click to expand...
Click to collapse
That's exactly what I thought and that's why I have asked you about your bootloader status. At times, you can lose your bluetooth and wifi while unlocking the bootloader which is more common if you unlock it unofficially. So if you can recall, when exactly the problem started. How long after you unlocked your bootloader ?
You say by reverting back to stock, it has not helped ? How did you revert back to STOCK. Try using Sony companion to repair your phone. That might help.
If that doesnot work, try relocking your bootloader on stock and see
Well, at times weirdest things seem to work!
I suggest flash STOCK which is device specific. i understand there is variation in Xperia Z models and thus I suggest you use the one which is device specific and report back,
By the way, is any Sony Care centre near your place ?
Hnk1 said:
That's exactly what I thought and that's why I have asked you about your bootloader status. At times, you can lose your bluetooth and wifi while unlocking the bootloader which is more common if you unlock it unofficially. So if you can recall, when exactly the problem started. How long after you unlocked your bootloader ?
You say by reverting back to stock, it has not helped ? How did you revert back to STOCK. Try using Sony companion to repair your phone. That might help.
If that doesnot work, try relocking your bootloader on stock and see
Well, at times weirdest things seem to work!
I suggest flash STOCK which is device specific. i understand there is variation in Xperia Z models and thus I suggest you use the one which is device specific and report back,
By the way, is any Sony Care centre near your place ?
Click to expand...
Click to collapse
I don't think it is because of unlocking because was officially and I have being using and changing ROMs and there wasn't any problem.
Maybe it could be when I flashed cm-12.1 (RR ROM). Then, I flashed stock one with flash tool to fix my WiFi, is there any different with companion? I can't go to Sony I am travelling in few days, and I need a phone soon!!!
josemolto said:
I don't think it is because of unlocking because was officially and I have being using and changing ROMs and there wasn't any problem.
Maybe it could be when I flashed cm-12.1 (RR ROM). Then, I flashed stock one with flash tool to fix my WiFi, is there any different with companion? I can't go to Sony I am travelling in few days, and I need a phone soon!!!
Click to expand...
Click to collapse
The only reason I'm referring you to Sony companion is that it might fix the issue as it is official way to do it.
Hnk1 said:
The only reason I'm referring you to Sony companion is that it might fix the issue as it is official way to do it.
Click to expand...
Click to collapse
It didn´t work... I don´t know what to do
josemolto said:
It didn´t work... I don´t know what to do
Click to expand...
Click to collapse
Dispatch it to a sony centre and they would certainly repair it for a small price
Hnk1 said:
Dispatch it to a sony centre and they would certainly repair it for a small price
Click to expand...
Click to collapse
Can you give me the wifi module and tell me in what folder I have to copy it?
josemolto said:
Can you give me the wifi module and tell me in what folder I have to copy it?
Click to expand...
Click to collapse
I am afraid I do not own an Xperia Z . I actually answer questions that no one answers in different forums.
I wish I could be of more help in this regard. Sometimes relocking your bootloader with flashtool helps as well.
josemolto said:
Can you give me the wifi module and tell me in what folder I have to copy it?
Click to expand...
Click to collapse
Hey I remember that you have not tried this so I thought you should give it a try.
Sony Emma Flashtool
http://developer.sonymobile.com/services/flash-tool/
How to use it
https://www.youtube.com/watch?v=g8azjXu4etI
Try repairing your phone with this and see what happens.
Quote me in case you expect a reply. Good Luck
I have the same problem
I have exactly the same problem guys, it started when I tried to activate Tethering (hotshot) and it didn't work
Notice that I was on kitkat 4.4.4 then I flashed lollipop 5.0.2, wiped the data and still can't connect to wifi or activate tethering
Please help me guys
kkareemadel said:
Please help me guys
Click to expand...
Click to collapse
I sent it to Sony technicians and they wanted me to pay 130 € to fix the "electric issues" so there my XZ is without WiFi forever, I guess. Sorry mate.
Sent from my D6603 using Tapatalk

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