Touch screen not responding sometimes.

[jaybowski]

it happen during unlocking of patten when screen is locked. the line keep cut off when my finger slide through the pattern. is it normal?

[Uliwooly]

That's normal but do elaborate

[jaybowski]

When dragging to form a line through pattern. The line keep cut out itself when I dont even lift my arm yet. Not only pattern, dragging the volume up and down sometimes stop in the middle of the sliding

[Uliwooly]

Test your touchscreen

https://play.google.com/store/apps/details?id=com.sonymobile.androidapp.functiontester

Do you have an additional screen protecting film?

[jaybowski]

Have tested and it fail to made a number 8. Yeah I have an additional screen protecting film

[Uliwooly]

Remove it and try again

[nonamedk]

Welcome in da club.

http://talk.sonymobile.com/t5/Xperia-Z1/xperia-z1-touchscreen-problems/td-p/410611
http://talk.sonymobile.com/t5/Xperia-Z1/Z1-Touchscreen-issue/td-p/434537

[Mystic]

i think this is really about using a cheap screen protector or using one thats made of a non charge conducting material. Some screen protectors are so think that they stop the touch on any screen.. try to get a good one. I personally opted for a matt finish because i know it helps send the touch sensitivity through well. 

[brapi2]

Hi, Matte finish usually is thicker, and reduces the contrast of the screen. Much like it blurs since it's anti fingerprint. Have you also have the same problem before using a Matte finish screen guard? If yes and the problem is gone then it's worth trying. This could help a lot of people having the problem including myself.