To change your visual voicemail greeting, follow the steps below: You can change the greeting from the Voicemail app itself on your Android device. Also, you can dial *86 from your Android phone and follow the instructions to change the greeting. You can modify your visual voicemail greeting just by calling from another phone to your Android phone number. You just need to press # right after you hear your greeting and then enter your password. Next, dial 4 for Personal Options and follow the instructions.