Hey there! I got my 8x a few weeks ago and thought the sticker was a little strange. Since there is no user access to the inside of the phone on the 8X, the SN/IMEI etc are on the outside of the phone. mine was a little tricky to peel off but once I got a corner up it peeled off cleanly leaving nothing behind. There's another copy of this sticker included in the box (at least in the 2 I've purchased) which you have to attach to the phone if you send it in for warranty repair.