When you tried to make a call from your Samsung Galaxy S23 Ultra/S23 Plus/S23, it shows Not Registered on Network, No SIM Card, SIM Card Failure, and such error? The best 4 solutions to solve Not Registered on the network or any SIM card errors on Samsung S23 Ultra. 0:00 Common Not Registered on Network error on Samsung S23, 0:26 1st Solution: Restart Network 0:44 2nd Solution: Eject and Reinsert SIM/ Restart eSIM 1:13 3rd Solution: Reset Network Settings 1:48 4th Solution: Switch SIM Card