2. Visual Voicemail & Missed Call Alerts – InstaVoice. InstaVoice is the only application on the market that allows you to manage not only incoming but also outgoing voice mail.
Great question! Although I don’t know if there is a specific function for this on your particular phone, the best way to save the message is the simplest. Turn up the sound as high as you can and record it onto a digital recorder (like you would use for a lecture), a cassette recorder or your cell phone if you have a voice recorder on it. Then save it as an MP3 on to your computer for safe keeping. You can also Google your vtech model number to see if you can find an owner’s manual. They might have a way to save a recording in there. Probably not, but it’s worth a shot.

Let’s say you’re a restaurant owner and you want to greet all your suppliers by name when they reach your voicemail. Your suppliers are saved in your phone’s Contact list, so you could write a greeting like: Hi {FirstName} from {Company}, I’m out of the office this week, but please leave me a detailed message and I will return your call as soon as I am back next week.
This article is mainly about how to erase iPhone from computer. You can erase iPhone data easily by read this guide. How to Restore iPhone Without iTunes or from iTunes