You don't have to turn off your phone to switch SIM cards (but you probably should)

- SIM: 3 events in the last 90 days
- Previous: earlier the same day · CFB 27 Sim predicts result of Auburn-Georgia game
What happened
Swapping SIM cards isn't something you'll do all the time, but when it does come up, you should do it carefully.
Summary assembled by rule from the sources below