If you use voice mail or an answering machine to answer calls when you can't, make sure that you have a professional message recorded, that does the same thing as tip #3, and gives callers any other pertinent information before it records their messages. Update your voice mail message as needed.
Phone → Voicemail → Greeting → Custom → Record → Save. So far you probably had a generic voicemail greeting on your iPhone and want to change it to a personal voicemail greeting and with most carriers you don’t even need an additional voicemail recording app and can record a custom voicemail greeting directly on iPhone. Record

‘They didn’t believe I was an employee’: Black Google worker says he was stopped while riding his bike around campus In Best Practices 21 Professional Voicemail Greeting Examples Share on Facebook Share on Twitter LinkedIn Contents hide Why your business needs professional voicemail greetings Professional voicemail greetings for your business cell phone number Voicemail greetings for the customer service phone number Voicemail greetings for calls received after business hours
Open the Phone app. Tap the Voicemail tab in the lower right-hand corner of the screen. If Visual Voicemail is not set up on your iPhone, you'll see a button that says, Set Up Now. Tap that button. Enter, then confirm a custom voicemail password. Tap Custom if you want to create your own custom greeting when someone reaches your voicemail box.