screen darkening problem

[mtd1231]

Screen darkening 3-5 seconds then comes back. I've not had this problem once multiple times,

https://www.youtube.com/watch?v=Tkg1fqj664s

[Thommo]

Does this happen when you aren't running a bench test because that's what a bench test will do

[mtd1231]

İn Happens When I dont run a bench test.

[Thommo]

Try performing a system repair using PC Companion as this will often fix issues - This will factory reset your phone and erase all data so best to backup before you begin

Switch off your phone and unplug from Pc (Hold volume up and power for around 10 seconds)
Start PC Companion and select Support zone then Update my phone/tablet then in Blue Repair my phone/tablet and follow the on screen instructions - When prompted connect your phone still switched off holding volume down or back button - This should start the repair or reformat process

If you are using Windows 8/8.1 or a 64bit operating system then adjust the settings for PC Companion and run in compatibility mode and chose Windows 7 or XP

[mtd1231]

I tried these but İt did not worked. What can I do Else?

[Thommo]

You would need to either return your device to the place of purchase or contact Xperia care and have your device inspected http://www.sonymobile.com/global-en/support/contact-us/

[Thrasivoulos]

u just bought one of the worst sony phones, as many of us here did.