Short message calling service

Short message service means that someone calls you when your mobile phone is turned off or there is no network signal.

When you turn it on or there is a network signal, you will receive this message.

For example, 13xxxxxxxxx will call you at xx time.

Please call me back and wait.

That's the message you said.

You turn off your cell phone and someone sends you a text message.

You can receive it when you turn it on.

Even if SMS is not enabled.

You can receive it when you turn it on.

The SMS call is aimed at the mobile phone.

This is not a text message.