[Q] Screen not waking up while on phone call

[carlosmeldano]

Hi,

I have a brand new Xperia SP, manufactured on 2013/W50, so it's really new. It contains the latest stock firmware.

After I start or answer a call and put the phone to my ears, it's screen doesn't came back and remains off until the call is ended by the other party. No matter if I'm moving the phone away from my head, not even the hard buttons are turning the screen back on. The touchscreen is not working either. It's just stuck as if it's near to my head. I can't even hang up the call...

It happens about 80% of time. Sometimes it works as expected without any problems. Happens more often when having an incoming call after a longer period (30+ mins) or if the call takes more than 1 minute (auto screen disable time?).

As a workaround, I turned on the function that power button hangs up call, but I cannot use my touchscreen while call.

I checked the proximity sensor with the phone's diagnostic function and with cpu-z and the sensor is just working fine 100% of the time.

Is it a known bug or a hardware problem? Does it have a workaround?

 

[madhukarmohan]

hmmm

Hi,

I have a brand new Xperia SP, manufactured on 2013/W50, so it's really new. It contains the latest stock firmware.

After I start or answer a call and put the phone to my ears, it's screen doesn't came back and remains off until the call is ended by the other party. No matter if I'm moving the phone away from my head, not even the hard buttons are turning the screen back on. The touchscreen is not working either. It's just stuck as if it's near to my head. I can't even hang up the call...

It happens about 80% of time. Sometimes it works as expected without any problems. Happens more often when having an incoming call after a longer period (30+ mins) or if the call takes more than 1 minute (auto screen disable time?).

As a workaround, I turned on the function that power button hangs up call, but I cannot use my touchscreen while call.

I checked the proximity sensor with the phone's diagnostic function and with cpu-z and the sensor is just working fine 100% of the time.

Is it a known bug or a hardware problem? Does it have a workaround?

I have the same problem. It is one of the few bugs in 12.0.a.2.254 build. Guys using unofficial release of 4.3 are not facing such problems. I suggest you to wait for the official 4.3 update which will be released soon according to SONY. :good:

 

[carlosmeldano]

really?

I have the same problem. It is one of the few bugs in 12.0.a.2.254 build. Guys using unofficial release of 4.3 are not facing such problems. I suggest you to wait for the official 4.3 update which will be released soon according to SONY. :good:

thanks!

so, this is surely a known bug in the 254 firmware? I'm just wondering because I asked this on other xperia sp forums but no users complained about it.

is there a workaround for it?

 

[madhukarmohan]

yes

thanks!

so, this is surely a known bug in the 254 firmware? I'm just wondering because I asked this on other xperia sp forums but no users complained about it.

is there a workaround for it?

Yeah, few r experiencing that. i hv seen complaints in sony blog and here too. I asked this question few days back. but, I didnt get reply.

 

[UltraWelfare]

I experienced this problem once.I think it was fixed after performing a SEUS repair...Not sure though :silly:...
Try performing a factory data reset on even reset app datas

 

[carlosmeldano]

thx

I experienced this problem once.I think it was fixed after performing a SEUS repair...Not sure though :silly:...
Try performing a factory data reset on even reset app datas

thanks to both of you, I'll do factory reset and repair via PC software, and some more factory resets. that should solve the problem.

I'm wondering why an out-of-the-box phone needs a reset, but let's see

 

[UltraWelfare]

thanks to both of you, I'll do factory reset and repair via PC software, and some more factory resets. that should solve the problem.

I'm wondering why an out-of-the-box phone needs a reset, but let's see

Don't forget to backup.First of all clear the data of the Settings -> Apps(or reset them)

 

[carlosmeldano]

Don't forget to backup.First of all clear the data of the Settings -> Apps(or reset them)

thanks. I won't backup as I installed only a few apps and the phone is almost factory state. but I'll do everything else.

hope it works. thanks to all, I'll report the results.

 

[UltraWelfare]

thanks. I won't backup as I installed only a few apps and the phone is almost factory state. but I'll do everything else.

hope it works. thanks to all, I'll report the results.

I hope everything goes fine

 

[carlosmeldano]

no success

I reset applications, did a factory reset, reinstalled phone's software with sony pc application, checked after each step, but no success...

sometimes working, sometimes not (mostly not) but the proximity sensor works fine.

out of ideas...

 

[UltraWelfare]

I reset applications, did a factory reset, reinstalled phone's software with sony pc application, checked after each step, but no success...

sometimes working, sometimes not (mostly not) but the proximity sensor works fine.

out of ideas...

Bring it to a sony service(or how's it called to your country)

 

[carlosmeldano]

it seems it's related to deep sleep. when I am called after the phone was left for 30+ minutes, it's more willing to not turning on the screen, but it turns it on after a while if having a long call. when I start the call, it mostly works. not always, but most of the time.

so it seems it's not sensor-related but something like the software is bugging.

what I don't really understand, why the hardware buttons are disabled while phoning when the phone is put to the face. it'd be enough to code that power button turns on/off the screen no matter what the proximity sensor says. I'd program it like that as a backup solution.

I wouldn't send it for repair, here in Hungary I always hear that mobile phone services just reinstall software and don't care about testing or finding the problem (if not deterministic), and do it again and again while you get tired and accept the failure. yes, it's sad but in the time of MNCs, the user doesn't matter at all after bought the product.

 

[UltraWelfare]

it seems it's related to deep sleep. when I am called after the phone was left for 30+ minutes, it's more willing to not turning on the screen, but it turns it on after a while if having a long call. when I start the call, it mostly works. not always, but most of the time.

so it seems it's not sensor-related but something like the software is bugging.

what I don't really understand, why the hardware buttons are disabled while phoning when the phone is put to the face. it'd be enough to code that power button turns on/off the screen no matter what the proximity sensor says. I'd program it like that as a backup solution.

I wouldn't send it for repair, here in Hungary I always hear that mobile phone services are just reinstall software and don't care about testing or finding the problem (if not deterministic), and do it again and again while you get tired and accept the failure. yes, it's sad but in the time of MNCs, the user doesn't matter at all after bought the product.

Try flashing custom firmware(not sure if it will work try it)...
If it doesn't work again then it's a hardware fault and not a software bug

 

[carlosmeldano]

Try flashing custom firmware(not sure if it will work try it)...
If it doesn't work again then it's a hardware fault and not a software bug

yes, that's another option. the other option is to cry off from purchase (I can do it within a week), they return the money, and I buy another one. I'll see as this is not that disturbing problem and I have no other problems with the phone like wifi bug or anything else.

someone said it's a bug so I hope 4.3 next month will solve it.