tasandmnm , via OnePlus 9 , Oct 27, 2021 : So I bought this phone outright with cash, clean North America imei but when they put in my imei it comes up incompatible! I had no issue like this with Verizon, it literally took 2 minutes in their store. I even had Verizon issue me an port pin to make sure their was nothing holding me up on their end and was in a Verizon store while talking to TMobile on the phone. When I enter the imei on TMobile website it says I'm good to move! I don't know if this makes any difference but I'm trying to get moved to my Aunt's account which is a legacy Sprint account. Any ideas?