I had my phone in my pocket when I was approached, and hugged, on the street by a stranger. About fifteen mins. later, I took my phone out and my photos were missing, my apps were missing, phone was on airplane mode, etc. I powered off the phone. When I re-started, the photos and apps all appear to be back. However, a strange text was sent , facebook was open, and all of these windows were open to websites that I hadn't, and never have, searched for. Previous to powering-off my phone, the only thing that was open was text messaging. I don't keep bank or credit card info on my phone, nor do I used any financial apps. Should I be concerned?