I just bought a Gold iPadPro 12.9 in from AT&T. There is a white strip on the top portion of the back of the iPad. Is this a part of the iPad because I cannot peel it off. Thanks.
Yep, the white strip is where the cellular antenna is located. It's normal on the cellular model iPad devices.
If you ever end up figuring out a way of peeling it off, let me know.