Touchscreen problem!

[Dinar020]

When i play a game or Just chat, sometimes my screen doesnt respond to my touch. I have no screen protector and my Phone never fell. It's very annoying because very often When i'm done typing, I see that there are like 5 letters missing so i have to chat very carefully. My fingers are always clean and dry and i got the latest update. I tried like 5 virus scanners,(Just in case 😀) but there arent any virusses. I rebooted my Phone many, many times. There are no pixels missing and my screen is very clean. Anyone an idea?

[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

If that fails to fix it then I'm sorry to hear this but 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/