Voicemails don’t necessarily have to be monotonous or extremely jazzy or funky. What you’re looking for is a balance between the two. Whenever I call someone and their voicemail greeting is playing, it tells me a lot about who they are, as a person. Which is why, you’ve got to put a little bit of “you” when it comes to voicemail. And the best part about all of this is, since you couldn’t come to the phone, at least the callers are having a good time listening to the message.
Wondering how to get an extra phone number to use with your smartphone? Read Burner Accounts 101. And if you're only recording in-person conversations, check out 9 Voice-Recorder Apps That Won't Miss a Second.

Open Phone → Make sure you are on Keypad → Press and hold the number 1 for a few seconds. It will call your voicemail; You can check your voicemails here. 3. Force close and reopen the Phone app. To force close Phone, on iPhone X and later swipe up until you see the apps in task view, then swipe up again on Phone.
Go to Account overview > My digital phone > Check or manage voicemail & features. On the Voicemail Settings tab, scroll to General Preferences and select Set Number Of Rings Before Voicemail. Choose a setting ranging from 1 ring (6 seconds) to 6 rings (36 seconds). Select Save.