That's cute, MBC! You can spy without setting out to be sneaky
My phone called my brother- and sister-in-law at 1:30 a.m. one night, and they had two infant kids at the time, so that was waaaay past everyone's bedtimes. Plus, it called from a rock concert, and it was LOUD.
It wasn't till around 3 that I saw what had happened, so there was no way I could call and explain--I was really worried what they might have thought was happening to me; their phone ringing late at night, no reply from me to their "Hello?" and all sorts of screaming and yelling in the background! Since then I've learned to lock the keypad...
It is kinda cute when that happens, though--like your phone is just keeping itself busy, gettin' in touch with some folks while it has some downtime...