Screen problem in cold weather

[JOHN_f]

Hi.you think what can damage screen like this?
My xperia z2 is like this Xperia z ultra.I am completely sure that water doesn't enter my phone.
Look at the video on YouTube:
http://m.youtube.com/watch?v=A0LbS4-NRRY

[Uliwooly]

@JOHN_f

that seems like a hardware issue, you could repair it with PCC if you want to narrow down the problem but, you should contact your Local support to get your phone inspected. 

[sgizmo]

This is 99% not hardware problen. You must reset you software on phone. I had this problem with other phones. Software repair help. This is smth like low memory or ram.

[orion3105911]

If it was taken from -25 celsius outside room, to 25 celsius in room, then its 50 degrees difference, in that condition even if its only air inside your phone, it turns into condensation water.

I would turn off the phone open seals usb, sim, memory card, take all out, and use hair dryer ON BACK NOT ON SCREEN. For minute, wait to cool down, then repeat.