Is it black for calling customers to open SMS calling service?

1. SMS calling service. This happens when the other party's mobile phone is turned off or the signal is not good. When the other party turns on the phone or the signal is good, you will receive a short message reminder of missed calls.

2. SMS calls and messages cannot be opened at the same time. For example, customers have both SMS calls and message records within one month.

3.SMS call forwarding service is a short message forwarding function, which provides customers with a call forwarding function similar to voice. Customers can use this service as long as they apply for 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.