Need help with signal drop - Sony Xperia ZL

Hi guys, I'm new to the forum and seriously in need of help with my phone.
After I update my firmware to 10.3.1.A.0.244 last week with PC companion, my phone had become unusable.
Everytime
Turn screen off > signal lost, can't received call.
Turn screen on > the phone seems like received new sim card, with red x mark then after few second only the signal is back.
Screen on > Signal no problem. Can receive and make call without problem, but once turn off screen the same happen again.
I also receive random restart sometime.
I'm pretty sure this is the phone/firmware problem instead of sim/operator problem since I had tried my sim with other phone and also my phone with other sim. My mode is C6502 and I had rooted the phone with old firmware. Of course now I lost the root after update. I had tried factory reset through phone setting and also tried using Sony Update service to reset, but the problem still remain.
Any advise and help will be greatly appreciate.

Related

Samsung i780 keep rebooting

I have got a new Samsung i780 from HongKong. It is brand new and is unlocked. When i put the sim and start, it starts normally first time and then when it reaches where it starts to search network, it shuts down and restarts. It keeps on happening. So i cant use the phone at all. This is what i did
1. I hard resetted the phone ---> Same problem.
2. I disabled the phone (flight mode) --> it works normally like a PDA
3. I have flashed the italian ROM (Complete) ---> it fails at 58%
PHONE-Waiting for erasing CODE area...
PHONE-Erasing CODE area complete...
PHONE-Writing failed at 58.
4. I loaded the phone part of PDXHL2 ROM - still keeps the loop of restart. what the heck i am clueless.
4. As its working normally when its in flight mode, i think its a radio issue. But not sure whether its hardware or software. Please help. I am very disapointed. By the way i am using this phone in MEXICO with a telcel SIM. for the 10 secs its showing the todays menu, i can see it has recognized the network and give full signal. But loop of rebooting continues. Please help.
Update to the problem
All. Additionally i tried putting the Russian ROM (Phone part). Now there is this new problem. The loop restart has stopped. Phone shows complete signal. But i am not receiving any call nor being able to make call. If i try making a call, nothing happens. i mean it keeps displaying dialing.... i cant even disconnect the call (anyway the call does not go through. Please help.
moviezap said:
All. Additionally i tried putting the Russian ROM (Phone part). Now there is this new problem. The loop restart has stopped. Phone shows complete signal. But i am not receiving any call nor being able to make call. If i try making a call, nothing happens. i mean it keeps displaying dialing.... i cant even disconnect the call (anyway the call does not go through. Please help.
Click to expand...
Click to collapse
Try another operator SIM card..
inertiax3 said:
Try another operator SIM card..
Click to expand...
Click to collapse
I tried Moviestar. It works normally. So what is wrong with telcel SIM ?

Problem with OTA Froyo update on unlocked, non-branded, unrooted desire

Help, Help, Help
Hi guys, could someone please help me?
I updated my phone with the Froyo OTA official update I received on my phone.
The installation rebooted a couple of times and finally got to the point where I see the HTC Sense scene. I don't have data or mobile network connection.
That means: no outgoing/incoming phone calls. After about 30 seconds I get the triangle warning pop up message stating:
Sorry!
Process system is not
Responding.
Followed by the following buttons:
'Force Close' & 'Wait'
And then - no matter what I do the phone eventually reboots.
And that goes for ever. Unless I power off the phone.
Another thing I noticed:
The notification bar is inactive as well (except for showing the time and battery status): i.e. can not be draged down.
I didn't root my phone and it was bought unlocked and unbranded!
My phone is basicaly bricked.
Help .... Please, please, please...
Can you reboot into recovery mode? See if you can try updating again using the method I tried: http://forum.xda-developers.com/showpost.php?p=7475688&postcount=2
The only difference with me was that I had to debrand my phone prior to doing the above, but come to think about it you are already unbranded so it shouldnt be a problem.

Phone Dead After Recent OTA Update

Hi All,
First of all I'm not a native english speaker and I'm a noob in this stuff o rom's .
I recently bought a phone and on update it to JB 4.1.1 with Sense 4+ . Everything went ok and the phone apparently was working ok.
The next day I just noticed that the bluetooth was not 100% because I had some cuts in the sound when connected to a bluetooth headset. Because of this I looked for another OTA update and it found one that said somethink like "General System Improvement" or something like that.
I've installed it but this update didn't went till the end since I get stucked on the "red sign" indicating some fail. I try to reboot the phone but apparently he was dead.
After a lots of tries and key combinations I was able to enter the boot mode and choose to restore to factory mode, but apparently it was not successful. Then I tried and option to check for CRC of img files I think (not sure because don't remeber). It check for 3 images files showing the CRC code, then I think the phone get stucked on one because I still have the waiting message but nothing else happens.
I pressed power button again trying to reboot the phone but since then then phone died completly. The only sign of life is when I connect to the PC windows emits the sound of detecting something but gives an error related to the drives.
Sometimes I get a message saying that a ARX device was found but not anymore.
Tried almost everything that I could read on this forum but nothing seems to work...I think the phone is looping on the boot or doesn't have any battery...not sure.
I've tried some RRU but they fail to find the phone saying not connected or not detected.
Any help will be greatly appreciated, Thanks
Johny
Sent it back for warranty repair as soon as you can this is a known fault as it happened to me recently.
Similar problems: http://forum.xda-developers.com/showthread.php?t=2075862
Getting out of APX mode
Your bootloader isn't locked right? Or were you ever rooted? If the answer is no, just send it to HTC and your warranty will do the rest.
Sent from my HTC One X using xda app-developers app

[Q] Need help with network drop issue in Arc S

Hi all..
I am new to the Arc forum and have already tried searching for any troubleshooting steps but in vain.
I had bought an Arc S from eBay. The problem with the phone is that the network drops after the phone is locked via the power button OR the backlight goes off..when I say network drop, i mean that the phone goes not reachable. However while the display is ON then no problem, I can make calls, send SMS, access internet..everything works till the phone is locked.
(Note: I am unable to contact the seller of the phone on eBay..)
Have already tried hard reset, flashing stock ICS via flash tool, custom ROM etc..I assumed it might be an hardware issue..but the technician couldn't do much..he just replaced the antenna..which didn't solve the problem..
Currently I am on a custom 4.4.2 ROM via CM.
Any help would be greatly appreciated..
Did you try reflashing the baseband ?
You can find them here : http://forum.xda-developers.com/showthread.php?t=1688049
Flash one (you should try the -85) through Flashtool and reboot.
Hope I helped.
Cheers.
Thank you for the quick reply..but after flashing the Baseband 85 also I continue to face the same problem...

HELP! McAfee thinks my phone is rooted and locked me out

So a little background first. Over the past couple of weeks I've been having an issue where my phone just all of a sudden tells me that my sim is not recognized. Usually a power down and back up fixes it, but it's been getting worse and worse. I tried getting a new sim card but that didn't help.
So today the problem occurs again, and when I restart I get a McAffee screen telling me my phone is locked because it's been rooted (it has not). From what I can tell, the only thing it will let me do is enter a pin that I don't know. Do I have any options here, or am I totally bricked? Any help would be appreciated, I'm starting to panic.
Don't worry, your phone till okay.
the last option you can do is hard reset or try to flash stock
Edit: found similar topic here: http://forum.xda-developers.com/showthread.php?t=2796958

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