Switching phones

[Phillipwinters]

I am upgrading from Fold 4 to Fold 7. Do I need to swap sim chips? 

[LongHiker]

@Phillipwinters That's an easy way to do it. Or you could ask your carrier for a new SIM card. That would terminate use of the old SIM card. 

[KingOfOnePiece]

Physical SIM: swap it.
eSIM: re-activate on Fold 7 via your carrier.

[meself]

If your sim is fairly new can just swap Sims if the Sim card is old i would get new Sim