What is the reason why Charm Blue mobile phone can't always receive short messages?

Mobile phones can't send and receive text messages. There are generally three possibilities.

First, the mobile phone can stop charging.

Second, set up a blacklist and estimate that all information will be rejected. The information received by the mobile guard was changed and restarted.

Third, the SMS center number is set incorrectly (it can be obtained through online search, and the SMS center number is in "Mobile phone settings-> Wireless and network->; Mobile network settings-> SMSC settings ",may be different mobile phone paths. If it still doesn't work, it is recommended to consult the operator's customer service.

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