Record your greeting. Under Voice mail, select Greetings. Select the type of greeting you want to record. Select Call me to play or record the selected greeting. Enter your phone number and select Dial. Follow the instructions in the recorded message to record your greeting…
To call your voicemail on an Android phone, simply open your phone’s dial pad and hold your finger down on the “1” key. You can also call your voicemail from a different phone by calling your own number and tapping the pound key. Navigate to your voicemail option if using a cell phone. … Listen to the recorded voicemail instructions. … Press the number on your keypad symbolizing “Yes” when asked if you want to delete your current message. … Select to record your own message if you want, or leave it as the mechanic default message. Step 1: Press # Right after you realize you want to delete your voicemail press the # symbol. It is VERY important that you do not hang up the phone. … Step 2: Listen to Menu. Once you press # on your phone, you will automatically be given access to a menu.

Your voicemail service is usually controlled by your mobile carrier, therefore, the most reliable way to turn off your voicemail is to ask their support team to disable it:
Note: Alternative method is to dial *86 (*VM) and then tap the Dial symbol on the screen.