What do you mean by calling and texting?

The meaning of this service is as follows:

According to encyclopedic data, SMS call service means that when the other party's mobile phone is turned off, in a call or there is no signal, the system will automatically send a message to the other party, so that the other party can remind the other party when the mobile phone is turned on or in a normal state to facilitate contact.

According to the National Encyclopedia, SMS call forwarding service is a short message forwarding function, which provides customers with voice-like call forwarding. Customers can use this service as long as they apply for the SMS call forwarding function and set the forwarding number as required. After setting SMS call forwarding, the mobile phone will no longer receive peer-to-peer messages from other mobile phone numbers, but directly forward them to the mobile phone with the call forwarding target number.