Ok this is weird. My iphone 5c was working great. And now for the past 2 months this thing happens 8 out of 10 calls i receive/make. This is what happens: I make/receive a call. I speak for about 30 seconds to 1 minute and then the call is dropped. Immediately I redial or I receive the same call and then the line is without problems, and doesnt drop. So in short the first time I receive or I make a call the line is dropped and if I call back immediately everything is ok. Now I spoken with my carrier and everything seems to be alright on their part. I check the sim card into another phone and everything works fine. So it is my device. This is driving me crazy. I have restarted the phone, there was even the update of 7.1.1 and nothing seems to fix this. Do you guys have any ideas about this?