I just got a new Sprint Iphone 5s and I keep getting calls from an unmarked number around 2am every other day. I turned off the ringer, but the phone still vibrates and keeps waking me up. Is there a way to completely turn off the ringer/vibrater for when I'm about to go to sleep for the night?
Lastly, how do I find the number who keeps calling me with an unmarked number? I answer the phone and all I can hear is someone breathing on the other end.