OPPO A78 5G

It's not possible to use my phone's internet connection

If you can't use your phone's internet connection, there may be several causes of the problem.

It's important to find out if you can make a call. If you can't make a call, you need to solve this problem first. When the problem is solved, you will most likely also be able to use your phone's internet connection.

Can you make a voice call?