Hello everyone I was having some trouble with dropped calls. So,I called apple about and they ran diagnostics on my phone and they had stated that it's my carrier verizon that is dropping calls. Sometimes when people call my cell phone either I don't get a missed call and / or the voicemail that they have left me. I was told by apple to remove and reinsert my sim. Card. Well now I heard a noise coming from. Does this mean that the SIM card is loose?! My iphone. Does my iphone 5 need to be replaced ?! Thank you.