Someone I work with got a forwarded text message that she opened. Now, whenever she gets a text message, goes into voice recorder, ends her phone call, pretty much does almost anything, it says "I see you" in a kind of creepy voice. It is not a ring tone, a message, doesn't appear to be in her memory, etc...
My phone has texting as part of the plan. I take a lot of pictures and send them to my dh. I don't mind recieving texts from people, but I don't carry a phone all the time either. I don't give out my cell number as my first point of contact.