Call 10086 to suspend the service? Illegal use.

If you do send such a short message, there is definitely no way out, and it will be automatically unsealed after a while. If it is sealed by mistake, you can call 10086 to complain to manual customer service.

If there is something wrong with the phone settings, so you can't send SMS, just re-enable the SMS function in SMS Settings. If there is no setting or the setting is invalid, it is recommended to restore the mobile phone to the factory setting, which can generally solve the problem.