sp power button and black screen

[jmlx93]

Hello,

Excuse my poor english because I'm a french user.

I noticed that I cannot activate the screen with the power button until the call ends.

I had to switch on the earphones to be able to reactivate the screen with the power button.

Please note that I have no screen protector.

Any idea ?

Jean-Marc

[Tejinder]

A RESET can help!! Use that feature as it does wonders!! Most probable cause could have been your screen guard but as you said you don't have one...

[jmlx93]

What do you mean by RESET ? reboot or ...

[Alexander1]

Hi and welcome to the community! Since you're new please be sure that you have checked out our Discussion guidelines.

First of all make sure that you don't have any cover or case covering the proximity sensor (top part of the phone, over the display). If you haven't, I would suggest that you try to boot your phone into safe mode to see if the problem may be related to any 3rd party app that you have installed in your phone: 

http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008#U348008

If the behavior persists in safe mode, you can try to reset your phone to factory settings as suggested above. 

Otherwise I advice that you have your phone examined by a service center. Please contact your local Xperia support team for more information: 

http://www.sonymobile.com/global-en/support/contact-us/