Touchscreen running on its own

[stubohb]

Hi there,

yesterday while using my Z1C as navigation my display (google maps) was swiped all the time on its own.

When I tried to get into homescreen it wont react, because at the height of the power button the touchscreen was always in movement.

Just when I was fast enough it jumped into homescreen, but then immediatly was activating every button on these height.

At home I was able to do a backup and put the firmware using PCcompanion again on the phone. After that I was able to come to the diagnose-tool for touchscreen and it was "cleaning" the testscreen by itself in one vertical height of the touchscreen.

Does anyone know this problem?

Thanks in advanced.

p.s. I have bought the phone in novembre last year, latest updates were installed.

[Thommo]

Was or is your phone in a case or does it have a screen protector on it and was the screen dirty - Also sometimes I also have this but holding power button and volume up to switch off the device then re-starting it fixes the issue

[stubohb]

I had a protection foil on it, but even after removing it it is the same problem.

Looks like a failure in one of the touchscreen-sensors (horizontal row).

[Uliwooly]

@stubohb

Remove the protective film then 

settings > about phone > diagnostics > test > test the touchscreen. 

[SergioPL1]

Look for micro-cracks under bright light. Sounds like some cracking to the sensors is going on.

To access your phone use usb-otg cable and USB mouse.

[stubohb]

The protection foil is already off.

I also tried with USB mouse, but it is the same problem, because the touchscreen is always reacting and so i am not able to use it proper.

But i made it to the diagnose tool (really not simple, the touchscreen is always working against me).

I made a video of it, looks like the row on top and second from top is having problems.

Video of problem

So I made an guarantee repair order at xperia care.

[dg26]

I've had a similar problem to this but only when the screen had a bit of water on it, a quick wipe of the screen did the job. Perhaps a bit of moisture got under the screen.

[stubohb · Accepted solution]

Received my xperia six days After sending it to xperia care.

its repaired and full functional.they changed LCD and some other parts.

very good and fast Service!!!