How to solve the problem that OPPO R7 SMS cannot be sent out?

OPPO R7 SMS can't be sent out. Solution:

To correct the information center number, first check whether the information center number of "SMS-SMS Settings-Information Center Number Settings" in the mobile phone is correct (compare it with similar local cards or consult the operator to confirm the information center number);

Consult the operator whether there is any arrears;

If conditions permit, replace the SIM card for testing.

(Backup data: phone book, SMS, multimedia, etc. ), I suggest you restore the factory settings.

If the above methods are ineffective, it is recommended to send them to the customer service center engineer for solution.