Help please!

[nawafa]

The letter E in my keypad cannot be used sometimes i cannot press it and there are times that when a press a certain letter in the same area different letters kept on popping out i don't know what to do about this help please.

 

[Thomasjtsi]

What model iPhone, age of iPhone, Jailbroken, iOS version?

 

[nawafa]

It is iphone 4s white ios 6.0.1, 64GB and it's almost a year with me now.