When you try to call anyone then you get this error "Not Registered on Network" on the Pop Up Screen. This is different problem created in one or two Samsung mobile phone about a year ago. But now this problem increased in many Samsung devices or Android phone. There are many problems in Samsung or android phone like this problem (Not Registered on Network) but solution is always available for any kind of problem. I have searched that but one solution is really easy which I am going to show you in 4 easy ways.
1- Lets go to Settings > More Networks > Mobile Networks > Network Mode like the image below.
2- Now click on GSM Only in Network Mode like the image below.
3- After that now tap on Network Operators in Mobile Networks like the image below.
4- After searching, a page is open in which many Networks name available and you will have to choose that network which you want to Register like the image below.
Now it is done. Enjoy....
1- Lets go to Settings > More Networks > Mobile Networks > Network Mode like the image below.
2- Now click on GSM Only in Network Mode like the image below.
3- After that now tap on Network Operators in Mobile Networks like the image below.
4- After searching, a page is open in which many Networks name available and you will have to choose that network which you want to Register like the image below.
Now it is done. Enjoy....