Besides creating an audio file in the right format (Adaptive Multi-Rate), you also need to trick the iPhone to upload your new greeting to the AT&T servers:
To change your personal voicemail greeting on your Sprint phone: Access your main voicemail menu. If you do not know how to access your voicemail box, follow instructions on Listen to your Sprint voicemail messages. Press 3 for Personal Options Press 2 for Greetings Press 1 to Change Greeting Press 1 to Record personal greeting or press 2 to select the standard greeting
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Step 3 To skip any voicemail messages that you have and go to the Main Menu, press the * key. Step 4 Go to personal options, press 4. Then press 2 to go to Administrative Options. Step 5 Click 1 for Password Options. Step 6 Click 2 to get the ON/Off options. Click the "OFF" button to stop the voicemail password.
If the problem is with your phone, the factory reset has a good chance of solving it. If not, contact your mobile service provider, to carry out some troubleshooting to help resolve the problem from their end.
Website: https://toolbox.iskysoft.com/iphone-recovery/change-voicemail-on-iphone.html#:~:text=How to Change Voicemail Greetings on iPhone 1,voicemail, you will see a "Set... See More.
When you set up Voicemail for iPhone 7, you can enter the Phone app, and then tap on "Voicemail" to access to Voicemail to change for the desired information.
Enter your password, followed by the # key. Press 2 to change folders. Press 1 for old messages (or listen to the prompts to select another folder). Follow the prompts. To retrieve messages from another extension (on-site) 1. Dial 924 for the Voicemail Gateway. 2. Enter your extension or mailbox number.
Website: https://www.affiliatedunicom.com/nec-telephone-system-support/new-extension-setup-voicemail/
5. Your voicemail will walk you through the setup process, including recording your personal greeting (the message that plays when you receive a call that goes to voicemail) and possibly your voice signature (your name, spoken by you into the recording).
6 hours agoChange your Voicemail greeting. 1) Open the Phone app and select Voicemail. 2) On the top left, tap Greeting. Knowing how to manage your iPhone Voicemail and messages is an important part of getting used to your new iPhone. And it’s especially crucial if you receive a lot of Voicemail messages.
Alternatively, you can contact us by clicking on the orange “Chat Now” icon located at the bottom of the page (see below).
The good news: It's easy to set up a personal voicemail greeting on your Galaxy S10.
3. Settings menu. To access your voicemail setting menu, press and hold the 1 key or dial 123 on your device dial pad. If this doesn't work, dial 1-805-637-7249, enter your 10 digit number and while the voicemail greeting is playing, press * (star key) and enter the password.
Website: https://www.jhbtele.com/blog/how-to-record-your-allworx-office-voicemail-greeting-from-any-phone/
This option will allow you to convert a written text into speech and make this your mailbox greeting (please note this is only available to those with the Enterprise account upgrade).
In some cases, people are successfully able to change the voicemail language from Spanish to English but the greeting language is not changed. So, if you need to change the language of voicemail greetings, we have added the steps that you need to follow; Open the phone app on your Verizon mobile Now, dial *86 and press the # button Choose option one and press the # button too A new window will appear in which you need to enter to password After entering the password, press the pound key again Say the greeting or signature in English and press # for confirmation
Just NowCall your iPhone from another phone and try to leave yourself a voicemail. Go to the keypad and press and hold on the 1, or press the Call Voicemail button. This dials voicemail. Check if you have any missed messages. On the Voicemail screen, tap Greeting. Then change your greeting to either custom or default.