Using Google Voice, you can record multiple voicemail greetings, and even have your voicemails sent to your email. Here's how ...

To call your voicemail on an Android phone, open your phone's dial pad and hold your finger down on the "1" key.

Anyone who has your cell phone number can contact you by ringing you up. However, that doesn't mean you will always want to answer. For this particular situation, or for those times when you're busy ...