I checked with the IMEI of a couple of phones, it says that the phone is not compatible with the t-mobile network, even though the phone is unlocked and supports the required bands for t-mobile.
The phone is OnePlus Nord CE 5g.
They are both purchased in India. So is there any way for them to be activated on the t-mobile network? Or will phones from other countries not work at all? Because they are both good unlocked phones with support of required bands. What else is needed?