iPhone 4s screen

[Mosbah]

My iphone 4s screen was broken and i replaced it. after 1 week and during calls, the screen start go upside down like matrix screen or like there is parasite. is this due to the new screen replacement or no? Please help.

 

[dnkirby]

have u got another screen to test?

 

[Brian Y]

Sounds like dodgy ribbon cables.

It might be worth attempting the repair again in case something isn't seated properly.

 

[Sceptre]

I've replaced many screens and have never seen/heard of that.
Did you google it to see if any other peeps have experienced that?