I have a white 32gb iphone 5c (AT&T) and its making odd noises at night when the phone is asleep. I have not noticed it happening during the day but there is also more ambient noise so I may just not notice. Also I have only had the phone 3 days. The noise its making can be heard in the zip file attached. It is the clicking you hear in the background (its faint). There is also a buzz sound when it starts but I was not able to capture that on the recording. Any idea what is causing this sound and is it normal? It goes through this several times at night and is loud enough that it wakes my wife up.