I just wasted a chunk of my afternoon trying to switch from AT&T to Xfinity. I bought a new, unlocked iphone 8 (which has the same modem chipset as the Verizon model) from an Apple store and went to the Xfinity store. I told the agent there that I wanted to move my number from AT&T to Xfinity. He said no problem. 30 minutes and a couple of different workstations later, he called his own tech support. A manager on the phone told him to tell me that Xfinity can't move a number from AT&T if it is going on to a BYOD iphone 8 or X. They could do it from Verizon or Sprint, but for some reason it couldn't be done from AT&T.
It has nothing to do with the cell network systems, as the agent said I could do it with older models of iphone. Just not the 8 or X. There isn't any mention of this on the Xfinity BYOD pages so I wanted to put the information out there for anyone who might not want to waste their time like I did.
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