How to set a message when the phone is not answered?

I hope the voice mail is what you want \ x0d \ x0d \ When you are busy at work, your mobile phone is turned off, your mobile phone is out of network coverage or the battery is dead, you can set the voice mail transfer function through the keyboard operation of your mobile phone, and the voice mail will record the incoming call information for you at any time, so that you won't miss any incoming calls, and at the same time, you can avoid some incoming calls and reduce the disturbance. When your mobile phone is connected, the SMS center will immediately inform you to listen to the recorded information. \ x0d \ x0d \ voicemail- Don't lose any incoming calls \ x0d \ x0d \ voice mail is a service launched by mobile companies very early, and many old customers are already familiar with it. When customers can't answer the call for various reasons, they will answer it by voice mail, and automatically record the outgoing information, and inform the customer service with a message in time. You won't miss any information. No matter whether the user's phone is turned off or not in the network service area, the voice mail will automatically record every call to you and inform you in time. \x0d\\x0d\ The latest version of this service is divided into standard voicemail and super voicemail. Someone called and heard the other party transfer the phone to voice mail, but hung up the phone without thinking about the message for a while. The advantage of super voice mail is that it can capture these incoming calls without messages and inform the owner of the calling number in the form of short messages. \ x0d \ x0d \ voice mail can also be opened through the phone hotline. After making a call, users can choose: business acceptance, new business handling, service application and voice mail in turn. When you apply for using the voice mail function, please press13800100166 on your mobile phone to enter the voice mail system and record your greeting. When in use, you can set the call transfer to13800100166, and transfer the call to voice mail when no one answers or turns off the phone. The caller first hears your greeting, and then can record his message according to the prompt. When the mobile phone is turned on, your mobile phone will receive a short message, which says that there is a new voice message in your mailbox, informing you that there is a new message.