red lines appear on screen

[prajwallk]

hello,plz help..i have xperia u and suddenly there are red line on the screen...row wise..

[Henke]

First check that you do not have "Developer options" activated: Settings, Developer options

If problem still there, you can try to do a repair of the phone software via Sony PC companion:

Click on this link to get Sony PC companion:

http://www.sonymobile.com/gb/tools/pc-companion/

Start PC companion, start "Support Zone", start "Update phone software" and click on "Repair".

Follow the on-screen instructions.

Let me know if you are still having this issue after the repair of the phone software.

[prajwallk]

thank you.do i have to back up the data before restoring?

[prajwallk]

also where is the devolper option?i cant find it anywhere

[Henke]

That depends on what android version you have but I think actually you have to contact your local support and they can give you further information on how to send in your phone to a repair center for investigation/repair.

[prajwallk]

thank you.do i have to back up the data before repairing?