Your phone may fail to detect and activate your SIM card if there are foreign materials on the SIM tray, SIM slot/port, or on the SIM itself. If this doesn’t resolve the problem, it’s time to get some laundry done. When your phone comes back on, wait for a couple of minutes for the SIM to get activated on the carrier network. Rebooting your phone could also fix this problem. Try the next trick if your phone still displays the error message. Wait for a few seconds and tap the same icon to disable airplane mode. Open your phone’s Notification Drawer (for Android) or Control Center (for iPhone) and tap the airplane icon. That will refresh your device’s connection with your cellular carrier and eliminate the “SIM not provisioned” error.
Put your phone in airplane mode, wait for a few seconds, and turn it (airplane mode) back off.
