What is the short message service?

First, you don't need to set a number, and you can't get through to other mobile phones.

Second, short message call means that when you turn off your phone or are out of service area, all your incoming information will be automatically recorded, and when you turn on your phone, these information will be sent to your mobile phone in the form of short messages. Your classmate's cell phone is turned off or out of service. When he is turned on or has a signal, he will receive the message that you call him. You don't need to set a number, just open this service in the business hall.

Extended data

The following will be described according to the assumption that A sends a short message to B, and B's customer sets a short message call to C. ..

(1) Customers who have the right to set SMS forwarding (namely Customer B): all mobile customers;

(2) Transferable number (namely customer C): all customers of China Mobile;

(3) Which short messages can be successfully transferred (that is, the restrictions on customer A): Only the point-to-point short messages sent by mobile customers can be successfully transferred;

(4) Further explanation: When SMS call forwarding is limited to the point-to-point SMS sent by mobile client A to mobile client B, B can set the call forwarding to China mobile client C;

(5) Mobile Monternet short message transfer and Internet short message transfer will not be opened for the time being. Due to technical reasons, it is temporarily impossible to realize SMS call transfer for mobile customers from other provinces (that is, customer A is a customer from other provinces);

(6) When setting the call forwarding number, the customer applying for SMS call forwarding must be a customer of China Mobile Network (not limited to this province).

Reference materials? Baidu encyclopedia SMS call