What does it mean to use SMS for mobile phones?

1, SMS call means that when you turn off your phone or are out of service, all your incoming calls will be automatically recorded, and when you turn on your phone, these messages will be sent to your mobile phone in the form of SMS.

2. What does it mean that the caller is SMS calling service? There are four reasons to prompt the caller to start the SMS service when calling: the phone is turned off, the caller has no signal in the service coverage area, the flight mode is set, and you have been blacklisted. In this case, the mobile phone will call to prompt the opening of SMS service.

3. Turn it off. Out of service coverage, the other party has no signal. Set the flight mode. You are blacklisted. In this case, the mobile phone will dial once first and then prompt to open the SMS service.

4.SMS is a part of the "integrated communication" business plan. The number of characters that users can send and receive short messages is 160 characters in English and 70 characters in Chinese. Short message is a kind of telecommunication service accompanying digital mobile communication system.