There can be a number of reasons behind the "not registered on network" error you are getting on your Samsung Galaxy Android Smartphone, however today we are concentrating only on the error we get while using the Reliance Jio India 4G SIM.
If you are looking for a more generalized solution for "not registered on network" error then please try the below
try Aeroplane mode or reboot / Restart or reinsert simcard after switching off the device or start device in safe mode or check volte enable or not ...okay
