All that being said, as voicemail is still thing, and carriers do offer it with every account, iPhones support voicemail. Here’s what you need to know if you want to set it up.
A professional voicemail greeting is essential in many aspects of a business. In sales, it enables you to properly respond to inquiries from prospects and customers or discuss a deal in more detail. When they call, and you can’t answer, you may lose the opportunity for immediate communication and potentially lose a client or customer.

If a phone rings once and then goes to voicemail or rings only briefly, it usually means either that your call is blocked or that the phone is not receiving calls at all. If the phone rings five times and then voicemail picks up, it's more likely that the person on the other end simply isn't picking up the call.
Most phones don’t make that as easy as it ought to be. Apple’s iPhone will back up voicemails to your computer along with everything else, but they’re stored in a funky file format that’s not easily played by most software. Most Android phones, meanwhile, store your voicemails on off-site servers.