How do I know when my digitizer is going bad on my iPhone 5?

[iMore Question]

how do i know when my digitizer is going bad on my iphone 5

the only function im getting on my iphone 5 is when the screen is locked i get to answer calls otherwise it selects its own app when i touch another andi cant get to turn it off

 

[kch50428]

Re: how do i know when my digitizer is going bad on my iphone 5

Refer to qualified service personnel.