Part of touchscreen is unresponsive
I have been using the iPhone 5c (16gb) for almost two years, a few months ago a part of the touchscreen (a 1 inch width strip in the left side allover the screen length stopped responsive and i can't use that part and most importantly I can't use the character on the keyboard that located in that strip.
It had never been into water and I have used a tempered-glass screen protector and an original Apple iPhone 5c silicon case.
It is really bothering and unable to use, I wonder what could have caused it and how can I fix it??
the weirdest fact about this, is that this part is working and responsive in the start screen (slide to unlock) and I can slide it and type the password as well.
Would like to get some help and see if anyone else had it?
The space between is the part that isn't working.
iPhone 5c, iOS 9.0.2
