Xperia S upper menu rolls down without touching the screen

[Patomster]

Hello all!

I have a Xperia S with the lastet firmware. The error is the following: the upper menu, where there is a sound, wifi icon, date, etc, rolls down without touching the screen. If i touch the screen for texting for example, the upper menu rolls down and i cannot keep texting. I have to touch the power button to block the screen, and touch it again to enable the screen. Is then when i can roll up the menu y try to use the phone. I can do this for a short time because the menu goes crazy again. From Sony Care told me that i can repair it by using The Repair Phone/Tablet option from the Sony Companion software(lastest version). It hasn't repaired my phone. I'm really concerned about, what else can i do? It is a software issue or a hardware one? Thanks for your time! Greetings!

[Qatrium]

PC Companion phone repair usually eliminates software issues, it strongly suggests that you have a hardware issue if software repair didn't fix the problem.

Just to make sure, do you have a screen protector installed?

[Patomster]

Hello Quester,

Regarding the cover, it has one, but i removed it when the issue appeared for the first time. It has factory cover only.

Hmmm, i'm really concerned about it. I don't want to believe that is a hardware issue, but maybe it is. I've tried to make a downgrade of the firmware. Once, it worked and the issue disappeared but after a couple, and while i was installing some apps, the issue appeared again. I was thinking that may be an app could cause the issue but after applying the repair tool from Sony Companion, the issue remains and the phone is cleared, without any 3rd apps. 

Thanks and Regards,

Pat.