I'm not trying to diss Tito, because I believe he is relaying what he is told by the engineers, but I can think of no technical reason that the factory unlocked phones shouldn't work on the XM platform. Of course I'm no expert and could very well be wrong, but as speculated above, I'm leaning towards this being some sort of adminsitrative oversight. But getting a SIM and trying it on the system will be the ultimate test- and seems to be a rather low-risk endeavor once I get a sim (or "borrow" it from my wife's phone). At this point I can't return the phone I bought on ebay since the kid has been using it (still on Verizon) for a couple weeks now. And he's like most teens, so it's already a little dinged.
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I guess I'm a "+1" here, but with a small difference.
My kid was using an S7, so I went out and specifically purchased an "unlocked" S8 (yes, a U1) so I can switch him over to XM. Type in the IMEI in online tool, and it says "This phone is compatible, but it may be locked by your carrier. Visit an Xfinity Store to activate". So I took it in, and they get the same message, saying it can't be activated on XM since it's "locked". I guess I'm preaching to the choir here when I say that a "factory unlocked" phone CANNOT be carrier locked!! When I bought the phone it came up with a T-Mobile logo. Switched in my AT&T sim and it came up on the AT&T network just fine. Switched in the kid's Verizon Prepaid SIm and that, too, worked just fine. So the phone is absolutely positively NOT carrier locked. I may takethe wife's Xfinity Mobile sim from her iphone as a proof-of-concept to see if the S8 will work with XM. Or maybe I'll just peruse the interwebs to find a galaxy IMEI that *does* come up clean and use that to order a SIM, and plunk it into the kid's phone. Don't know why XM can't fix this- especially if it is the loading of unlocked IMEI's that's holding this whole train up. The tech guys are doing a great job of Sales Prevention!!
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