In alt.home.repair, on Sat, 01 Aug 2020 21:01:45 -0400, Dan Espen
wrote:

writes:

"Unfortunately your phone is not compatible
Not all phones are made to work with Xfinity Mobile, but you can still join Xfinity
Mobile by trading in your current phone and buying a new one."

Has anyone ever seen the above msg ? We are trying to switch phone
carriers and the agent with Xfinity kept getting the above popup
msg. We were told a number of reasons why this could happen: "Phone is
the wrong technology", "Phone has wrong antenna", Not compatible IMEI
number.
These are "Galaxy 10+" phones, 3 months old !

Instead of trying to switch carriers, I'd try for a second opionion by
trying to sign up for Xfinity and see if they ask what phone you have,
and give you the same answer

If the answers here are not enough, check out comp.mobile.android.

Don't know much about phones.
Any help is appreciated.

The S10+ is 5G compatible.

Maybe it meant Xfinity doesn't do 5G?

Could be, but pretty stupid to shoo him away just for that.