The SIM card, or Subscriber Identity Module, is a small, removable card that stores your phone number, contact information, and other account details. If you need to change the SIM card on your Samsung S22 Ultra, follow these steps:
1. Turn off your phone and remove the SIM tray from the side of the device. 2. Remove the old SIM card from the tray and insert the new SIM card into the tray. 3. Insert the SIM tray back into your phone and turn it on. 4. You may be prompted to enter your PIN number or PUK code. 5. Once you have entered the correct code, your new SIM card will be activated.