I can't seem to figure out how, but I recently met this girl, and we've been talking on the phone in the evening, and sometimes, I'll hear her voice coming from my pocket, and I'll dig my phone out and she'd be (at 2 am mind you) on the other end laughing at my horrible singing or whatever I was doing in the car. I called her 6 times yesterday from my pocket! Phone is locled and everything, 3 days ago, it was my mother. It's always the last person that called...so I can't understand how a locked phone is calling people like this!