1. Open the Phone app on your iPhone. It's green with an image of a phone, and it's located in the dock at the bottom of your Home Screen by default. Shape Up Your Future 16th & 17th September 2021.
Why would you remove support for this? I'm completely amazed. I thought my old custom greeting got lost during an update but not to have a BASIC feature that has been available since Skype's inception is just foolish. I now can't change my message if I'm on vacation or travelling on business or anything. This is a major step backwards in terms of functionality. I'm pretty sure Microsoft is trying to let Google take over the world. In reply to JamesWEwing's post on March 13, 2018

Don’t rush. It’s important to speak slowly and clearly when leaving your next voicemail greeting. Have you ever called someone and the message sounds like one big word? Don’t be that guy. Pronounce your words and take pauses between your sentences
While email and text support saw an increase in recent years, many customers, partners, and potential hires still prefer to call your company directly. When writing your voicemail script, include basic information such as a short greeting, your company name, an invitation to leave a short message, and the time frame in which the caller can expect a return call. If relevant, you may want to include your office hours, extensions for company departments, and the contact information for your office manager or HR department.