Has the SIM size changed? Can I just pop in my 10.5's SIM to the new 2018 iPad when I get it? AT&T service, if that matters any?
I popped the AT&T sim card from my 10.5 pro into new 12.9 Pro and it worked immediately. An hour later when I thought about it I went to the AT&T website and my account showed my new 12.9 iPad in place of the 10.5!Can we do that? Just trade the SIM cards? With AT&T I've always had to log in to me cellular account in settings to transfer my current data plan to any new iPad. Maybe that's because I'm still grandfathered in on the original unlimited data.
I popped the AT&T sim card from my 10.5 pro into new 12.9 Pro and it worked immediately. An hour later when I thought about it I went to the AT&T website and my account showed my new 12.9 iPad in place of the 10.5!