1, confirm whether the SMS service number is accurate, such as: SMS → More → Settings → SMS Service Center → Set it as the local accurate SMS center number (consult the network operator);
2. Restart the phone;
3. Take the invoice and mobile phone to Jinli Service Center to find a professional to solve it.
How to display "send function disabled" when sending SMS by mobile phone;
Can be excluded in the following ways:
1. Tencent Mobile Manager → Click on the avatar in the upper right corner → Settings → Secure SMS → Turn off the "Secure SMS" function;
2. Settings → Application Management → Configuration Application → Default Application → SMS → Information;
3. Back up important data and restore factory settings.