I called AT&T today to find out why when someone called my number, they got a message saying this wasn't a valid phone number. The lady tells me to turn off the phone. Ok no problem here right? Right. Take out the battery and read her the IMEI number. Um ok, one problem here, it's an iPhone and well.....you know. I didn't tell her this though of course it's on the account. I quietly turn on the phone and go to settings/general/about and read her the IMEI number. I wonder how many people who own iPhones are instructed to remove the battery so they can read the IMEI number? Anyways, the problem was on my end, forwarding the phone to another number that was no longer working and I forgot all about it.