My phone was in my pocket, locked, and it began buzzing. I took the phone out, but there was no incoming call or text message notification appearing on the lock screen. I put in my code unlocking my phone, and check my call log, as well as my sms inbox. In my sms inbox, I see that a short text is showing as being just sent from my phone to a person that is in my contact list. I haven't had any text communication with this person for about a week, and the content of the text, isn't even something that pertains to me. I have a Galaxy S 3 on the stock Ice Cream Sandwich OS. Does this mean my phone has somehow been hacked? How could an sms be articulated and sent while the phone is locked in my pocket.