If you never recorded one and want to record or change a voicemail greeting, you've come to the right place. The process is very simple. You'll just have to click the green phone icon, the same place you make calls, and navigate to the voicemail screen. On the voicemail screen, you'll see a greetings option on the top left.
For example, in the T-Mobile Visual Voicemail app, select “Settings” from the three-dot menu at the upper right of the screen.

You can delete individual voicemails as you listen to them, and most networks will automatically delete old voicemails after 30 days. However, few networks offer a simple way of deleting multiple voicemail messages when your mailbox is full – unless you can use an option such as Visual Voicemail, which lets you delete messages with a quick tap of your finger.
3 hours agoVisual voicemail. Visual voicemail is direct-access voicemail with a visual interface. Such an interface presents a list of messages for playback, as opposed to the sequential listening required using traditional voicemail, and may include a transcript of each message. In 2007, Apple 's iPhone was the first cell phone promoting this feature.