The Phone app's Voicemail menu will let you record a custom greeting that you can edit at any time. If you want to check that you set up your voicemail correctly, call your iPhone using another phone.
Once you finish your voicemail message, you can end on a note of gratitude and express thanks or that you realize the recipient of the message us busy, so you’d appreciate a return call. Whichever way you choose, make certain that the tone of your message is upbeat. A business voicemail greeting sees each call as their chance to engage with their clients or vendors. Hello, you’ve reached the office of Lydecker and Lydecker. We are currently unavailable to answer your call. However, your call is important to us, so please leave your name, phone number or email address, and a brief message and we’ll get back to you as soon as possible. Thank you for your interest in Lydecker and Lydecker Law Offices. Professional tone Provide the caller with specific information Request the caller to leave specific information Extend gratitude for their call Professional Voicemail Greetings

Don't lose customers after hours. Here are some best practices and sample scripts for professional auto attendant and voicemail phone greetings.
Most businesses will automatically play a recording if you try to call their office when they are closed. An after hours announcement is a professional way to notify callers of important details, rather than making them wait for the call to failover to a voicemail box or other destination.