Your iPhone does have a voicemail password, but you only have to enter it once and many new iPhones set it up automatically. However, there still needs to be some form of authentication between your carrier and your iPhone to download your voicemails. Even though you don’t see it, your voicemail password still exists.
Other types of Visual Voicemail: Tap Phone, then Voicemail. iPhone: Select Greeting. Other smartphones: Tap Settings, then Change voicemail greeting. Select Custom, then choose Record. When you're finished recording your greeting, select Stop then Save. Some smartphones may call the voicemail system when you select Change voicemail greeting.

In this article, we’ll discuss the easiest way to delete voicemail messages from your Android phone. Plus, our FAQs include ways to recover any corrupt or accidentally deleted messages.
4 hours agoVoicemail is an audio or voice message that’s recorded when you’re busy with another call or when a phone call goes unanswered, for you to listen to later. It’s different from the age old answering machines in that instead of storing the message on the device, it stores it in a mailbox on your service provider’s server, the same way an email message is stored.