How do smartphones set up downtime or empty status?
Use this feature, all of your calls will not be able to answer, but can call and send and receive text messages.
If you want to suggest that it is down, enter a number that is now down, if you want to suggest that empty, then enter a non-existent or for the use of the number.
In the phone "Settings → Call Settings → Call Forward → Voice calls → always transfer → enter the number", OK can.
Use the call forwarding function, to the operator's business hall to open the call transfer function.
