Trying to add my iPad Pro to my ATT Mobile Share account I entered the IMEI number from the back of the box fyi - ATT identified it as a iPad Pro (silver) cellular when it's iPad Pro (space grey) cellular. I pressed continue anyway. (finish color probably doesn't matter) Then it asked for the 19-20 digit SIM card # ATT instructions said to look in General --> About --> CCID # there's nothing labeled CCID there on my iPad Pro it's not on back of box either am traveling; no paper clip handy. I think last time I used a paper clip to remove SIM. Is SIM card # labeled something else in settings ?