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.
If you have a main business phone number that’s shared with the customers or publicly listed, you’ll want to make sure it has a professional voicemail message to greet callers. Here are sample greetings you can use to help you craft your own.

When you call 321 from your mobile, you’ll be asked to type the PIN into your phone and record your name and personal greeting (that’s what people will hear when they call through and can’t get back to you, so make it catchy).Once your greeting has been set, we’d recommend changing your Voicemail PIN to something more personal so you can easily access your Voicemail settings in the future. You can do this through the user options area of 321 (that’s option number 8 on the main menu).Your PIN can be any series of numbers between 4 & 9 digits, provided they are not sequential (e.g. 5678) or aren't a series of repeated numbers (e.g. 111).
Now that you’ve learned how easy it is to manage your voicemail messages from your Android phone; we want to know, have there ever been times when you’ve accidentally deleted a message? What recovery method did you use? Let us know in the comments section below.