Sometimes I can't get incoming calls with my iphone 5c?
I went to the apple store already, and the guy tested my phone. It worked perfectly fine (I'm a bit biased about the place.. as if everything will work in there). So I took my phone back and it still has problems. Sometimes it takes a while for the phone to make the dial sound when I'm calling others.
I have only dropped my iphone 5c probably three times, but I have a strong protective case that covers all over it. So far, no damages (knock on wood).
What's the problem here? Should I just keep taking it back to the apple store? It has a one year warrenty, but I can't seem to prove that somethings wrong it right then and there.