My wife and I have iPhones and for some reason her phone drops calls constantly. We can both be on the phone in the same place and her phone will drop a call twice during a 20 min call and mine doesnt at all. I've restored it a couple of times and as of now she's on 1.1.4 with a z iPhone jailbreak (we're both on at&t) what do you think is the cause of this? She dropped her phone in the toilet (it dropped calls before this) and she's dropped it so that the volume button was permenantly depressed so I had to take the cover off a couple of times. Are they able to tell if it's been off?