Call recordings are forwarded to you via email and appear in Google Voice's list of voice mail recordings. You can generally tell the difference between voice mail messages and recorded conversations because the latter are probably longer, and say "Transcription not available."
First I would check the phone to see if it saved the greeting to its files. Some phones do and some don’t. If you are unable to find the voicemail greeting file, google the question for your type of phone. If you’re unable to find it or do it, call youe cell phone carrier to see if they can help. Some carriers still save voicemail greetings on their systems. It’s a great reminder though that if you have a greeting you really want to keep, to make sure you record it and save it to your computer and to a flash drive or cloud drive for good measure. Hope that helps! Laura

A good voicemail greeting is short and professional, lets people know that you’ll get back to them, and invites callers to continue engaging with a call-to-action. You should also show your personality if you’re in an industry or role that allows that. If your industry is more conservative, however, you’ll want to keep humor and personal touches to a minimum. A greeting Your name Your company A simple explanation for missing the call (e.g. you’re away from the phone or are on holiday) A rough estimate of when you’ll get back to the person An alternative person to reach out to (if you’re out of office) An alternative mode of communication (if you prefer email or text) A call-to-action such as “Leave a message” or “Send me an email at [email protected]”
Now, as for recording your actual voicemail, you will be prompted to say and record your full name as this is the default voicemail of the Samsung Galaxy S9. If you would like to customize it instead to be a personalized message, follow these instructions.