I have to ask, what is the exact model # as reported in the phone settings (Settings>About phone>Model number) ? My question is whether the phone may have been an international model and not accepted by the carrier. I use a Samsung Galaxy S21 (model # SM-G991U for example) on T-Mobile postpaid. I bought my phone directly from Samsung for use with T-Mobile. Some international models may look identical, but are not fully compatible with all networks.
Your thread/post is perfectly fine in this forum from a moderator point of view.
Just another day in paradise.....
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