After pressing the Voicemail tab, all of the voicemails stored on your device will display. From here, you’re going to want to tapGreeting located in the top left. There will be two options located on the Greeting page: One option to utilize the default voicemail message and another to record a custom message.
Open the Phone app . Press and hold “1” to call your voicemail. Enter your PIN and press “#”. Press “*” for the menu. Press “4” to change settings. Press “1” to change your greeting. Follow the recorded instructions. How do I change my voicemail message? From the Home screen, tap the Phone icon . Tap Voicemail then tap Greeting (upper-left). Greeting is located in the top-left corner of screen. Tap Custom to record a greeting. Enabled when a checkmark is present. Tap Record to begin recording the custom greeting message. Tap Stop to end recording then tap Save. Call *86 (*VM) from the handset or the 10-digit mobile number from another phone. Follow the instructions for choosing the language options then press the # key to confirm the choice. When prompted, enter the 4-7digit password then press the # key. When prompted, say the signature (or name) then press the # key. Open your Android’s Phone app. It usually looks like a phone receiver at the bottom of the home screen. Press and hold the 1 key on the keypad. Tap Add number. Tap Service. Tap My carrier. Tap Setup. Tap Voicemail number. Type your mobile phone number and tap OK.

3. To permanently delete the message, click on the trashcan icon, either found below the voicemail details or at the top right-hand corner.
2 - Dial the extension number of your mailbox from your VoIP device and follow the voice prompts to change your greeting; Option 4 to record a new greeting.