Bought a 10.5 from AT&T about a year ago and I had the embedded sim activated on their network. Has anybody had any luck in trying to get AT&T to unlock the esim on these things? I've read a few cases around where some people have had luck with AT&T doing it, but it required a few back and forths with different reps. The physical sim card slot is unlocked (which I have my old iPad Air 2's Apple sim in there that I activated on T-Mobile with that free 200mb plan), but it would be nice to use the esim for someone else instead of AT&T.