Xperia C4 touch screeen problem

[Geesara]

I bought my friends xperia c4 dual  a few months back it was working fine expect that heating problem.

Now suddenly my touch screen goes crazy!! randomly touching things ( sometimes ) and freezes the display can't do anything.This happened when i after i connected to a hi fi setup ( an old sony with 2 subwoofers ) using a aux cable.Please HELP!! i havent logged to instagram in days.DId a hard reset, all the resets ( software repair with pc companion ). removed glass protector no help,took a shop and they said display replacement costs 60$ i havent got the money.I dont think this is a hardware problem because after a factory reset it worked a few days.Please help!! I havent logged in to instagram in days.

details

Sony c4 e5333 dual sim 4g

Android 6.0 ( updated to latest software )

no third party apps installed

[Uliwooly]

@Geesara

You could repair the phone with XC and also test the phone in >>> safe mode, see if you experience the same issues.

[Geesara]

no help,did a software repair and a firmware update still the same..it worked just fine but after 6 - 7 months touch became crazy!! any other solutions ? and also my phone heats up quickly ,it might be the problem?

[Uliwooly]

@Geesara

you should get it inspected by your Local support

[Santanuray]

While typing on xperia (model e5333)  keyboard, it does not respond for a while, blocks my typing, makes orange bar appear on the keyboard screen..I my magnification settings is off..

tried to boot in safe mood as per ur instructions u gave to anotehr user, but unable to boot in safe mode despite following your steps..pls help..the mobile has become unusable..feel like throwinfg out through window. 

[TanSK]

My Xperia C4 having touch screen problems, especially at both top, & bottom and  left & right of phone, very irritated. Can sony help, almost wanted to throw the phone with such repeated issues. 

[365]

I bought xperia c4 dual phone a few years back it was working fine.

Now suddenly my touch screen goes crazy!! randomly touching things                    (sometimes) and freezes the display can't do anything.This happened when I after reset (fatory Reset) my sony xperia phone proper working  but after some time freezes the display can't do anything. All the resets ( software up date at your service center at saharanpur (UP) but my problem same as. Please HELP!!  I dont think this is aTouch problem because after a factory reset it worked proper a few times .Please help!!