Why can't Huawei 4a SMS be sent out?

Hello, if you have this problem, please try the following:

1. Check whether the number of SMS center is set correctly. The number of SMS center can be consulted with the operator.

2. Check whether the SIM card is in arrears.

3. Check whether there are sensitive words in the short message content, which are blocked by the operator.

4. Check whether sending repeated short messages to the same number is blocked by the operator, and consult the local operator for details;

5. Put the SIM card on other brands of mobile phones and check whether it can be sent normally. If not, please consult the operator.

6. Please back up the third-party apk and restore the factory settings to see if the SMS can be sent normally.

If the above methods can't solve the problem, please upgrade the latest official firmware.