6. Access your greeting or recorded name settings. Next, press the key on the dial pad that corresponds to options for your greeting or recorded name. In this case, it's 3.
On your Android device, open the Voice app .At the top left, tap Menu Settings.In the Voicemail section, tap Voicemail greeting.Next to the greeting you want to use, tap More Set as active.How do I change the voicemail message on my Android phone?

When you get a voicemail, you can check your message from the notification on your phone. Swipe down from the top of the screen. Tap Voicemail ….You can call your voicemail service to check your messages. Open your device’s Phone app . At the bottom, tap Dialpad . Touch and hold 1. How do you listen to your voicemail from a different phone? Call your 10-digit wireless number. When you hear your voicemail greeting, press the * key to interrupt it. If you reach the main voicemail system greeting, enter your 10-digit wireless phone number, then interrupt your greeting by pressing the * key. Can I listen to my voicemail without setting it up?
4. Reset your pin. Maybe you have forgotten your pin or passcode or you never set it up in the first place. This is a common issue. Most carriers have detailed instructions for changing passcodes. For example, to change a T-Mobile passcode, hold down the "1" key, then press the star key, and then press number 5 to go into passcode security. Then press 1, and you will be able to change your passcode. You can change your Sprint passcode online by choosing the my preferences tab and then the "things I can manage online" section. You can reset your pin by calling the carrier if you have forgotten it or never set it up at all. Some sites allow you to do this online.