z1 touch problem

[Bukani]

help me please...
My phone is Xperia Z1 C6903 ,when cpu is a little hot my touch screen be bollix and work disordered, for example when i touch an area the other area work! Also i have problem with typing at this times...
my aforetime android version was 4.4.4 ,i update my phone to android 5.0.2 lollipop but i have this problem again,
I see this problem in bulk of the Xpria Z1 phones.
I know that this is a software objection but i can't solve it!
please help me,whats problem?
What should i do?

[Uliwooly]

@Bukani

I don't quite understand your issue, but try this

reinstall the latest update with PCC and report back, also are you using a protective case and/or film?

PC Companion (PCC)

Bridge (for Mac)

Alternatives on How to backup Xperias

http://talk.sonymobile.com/thread/36355

[Uliwooly]

@Bukani

Settings > about phone > diagnostics > test > test touchscreen.

[Bukani]

@uliwooly
Hi,
I update my phone to the last version of android 5.0.2 lollipop(version 14.5.A.0.270) by" software update" of my phone,not by pc.
But i have this problem again.
Also i test the touchscreen,this problem is not a hardware objection.

[Uliwooly]

@Bukani

use a computer > reinstall lollipop with PCC > report back 

PC Companion (PCC)

Bridge (for Mac)

Alternatives on How to backup Xperias

http://talk.sonymobile.com/thread/36355

[Bukani]

My problem is not resolve,
Sony should send an update to resolve this bug

[Bukani]

Most Xperia Z1 User's have this problem with z1 phones
Bollix and disordered touch screen.
Is not a hardware objection,please helllllp....
Sony should send an update for Xperia Z1 phones to resolve this bug

[panderp]

I have the same problem even after numerous factory resets.
The screen flickers and won't unlock, and the screen becomes dead in bottom left on the number which I need to login.
I am giving it up losing me business.

[Krishnanmshr]

Me too have same problem. When the phone becomes hot then the touch response is worst, for instant while playing a game I loose control of my player cause of bad touch,while texting if I wanna touch say for instance "I" letter then "u" is clicked.Sony must resolve this problem

[Uliwooly]

@Krishnanmshr

Don't create duplicate posts, if you experience this after repairing the phone with PCC, contact your Local support to get the phone inspected.