SM G928g unlocked and sim from t-mobile missing fwatures below

[AC Question]

Old phone S2 and T Mobile SIM.
New phone SIM from old phone is in new phone.
New phone unlocked prior to insertion of SIM.
New Phone: No Samsung Pay, No unadvertised free roaming on ATT which old phone did, No Wi Fi calling

 

[Rukbat]

Check with AT&T about the free roaming. That's an account issue. Wifi calling is up to the phone - if TMobile phones don't have it, you won't get it by putting the phone on AT&T.

As for Samsung Pay, if you're on Lollipop or later, you can install it from https://forums.androidcentral.com/e...ls?id=com.samsung.android.spay&token=rM9EsZHn.