sim card compatibility?

[Gary02468]

I have a T-Mobile Note8. If I switch to an unlocked Note9 (purchased from Samsung), can I use my old Note8 sim card in the Note9?

 

[atlas9171]

I can't think of a reason why you wouldn't be able to use the old sim.

 

[Almeuit]

I have a T-Mobile Note8. If I switch to an unlocked Note9 (purchased from Samsung), can I use my old Note8 sim card in the Note9?

Your SIM will work fine.