In the past couple of weeks I've been getting calls from people telling me that they noticed I called them and were returning my call. The odd thing is I don't know any of these people and there is nothing in my call log that indicates I ever called their number inadvertently. It's like my phone is making random calls in the background. I'm now getting 2-3 calls per day so any help would be greatly appreciated. BTW, I've only loaded one app in the past couple of weeks "Bluetooth File Transfer".