I can't send a few short messages in a row.

1, motherboard hardware failure, such as intermediate frequency, power amplifier, etc. If the call is normal, it can be ruled out.

2. The number of SMS center is not set normally; In this case, it can be received normally, but it cannot be sent.

3. The Internet service provider has not enabled or restricted the SMS function; A few users have this situation, you can call the network service provider to inquire.

4. The 4.sim card has insufficient storage space, so the SMS function cannot be used; Just empty the short message storage content.

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