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:
5. Please take notice of the green number that appears below the “Voicemail number.”
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If you want to change your default greeting: Open the YouMail app and tap the Menu (☰) icon in the top left corner of the screen. Tap on Greetings. Under the default phone/phone number, tap Change. You can either record your own greeting or select an existing one.
6. After the message has played, you’ll be given some options for what to do with the message e.g. delete or save it, etc. along with the corresponding number to press.
To activate Visual Voicemail, dial 1217 from your iPhone and a recorded message will confirm it has been switched on. When a message is left in your voicemail mailbox, you'll see a notification against the ‘Phone’ widget on your iPhone. When you activate Visual Voicemail, your current personal greeting will carry over.
How to set up a custom voicemail greeting on a Samsung Galaxy S10, in 2 different ways
Use your Verizon voicemail service to answer your calls when you’re away, on another call or simply unavailable. Review messages at a later time from any touch-tone phone, from your home or at a remote location. With Standard Home Voicemail and OnePoint Voicemail: Your …
1. Open your iPhone’s Settings. It’s a gray app that contains gears and is on your home screen.
Iphone wont let me change voicemail greeting Home Iphone wont let me change voicemail greeting
On the iPhone, go into voicemail and tap "Greeting". Record a few seconds of something and tap stop. Before you tap save, use iFuntastic or SFTP to navigate to /var/root/Library/Voicemail on your iPhone. You'll see a file called "Greeting. amr". This is the audio you just recorded. Delete that file and replace it with your custom message which should then be renamed to "Greeting.amr". Tap "Play" on the iPhone to verify your message works. If it plays, tap "Save" and your custom message will be uploaded to AT&T's servers.
3 hours agoNeed to change your voicemail greeting on the iPhone? If you never recorded one and want to record or change a voicemail greeting, you've come to the right p
Our last hope to fix can’t record voicemail on iPhone Verizon, AT&T, Sprint and T-Mobile is to reset network settings. Doing it won’t delete or alter the data, only the VPNs, APNs, Wi-Fi Passwords, Paired Bluetooth Devices, and other network-related settings will reset to default. Navigate to the Settings app. Go to General. Tap Reset and then select Reset Network Settings. Enter the password to proceed and confirm Reset.
3. Tap the "Voicemail" button in the bottom-right corner of the screen to enter voicemail.
Website: https://www.msn.com/en-us/news/technology/how-to-set-up-voicemail-on-your-android-phone/ar-BB1c3igC
Tap “Phone” on your iPhone’s “Home” screen and tap “Voicemail” to access your voice-mail settings. Tap “Greeting” and select “Default” if you wish to use the default greeting for your voice mails. Click “Custom” if you want to create a personalized greeting, and tap “Record” to say your greeting.
Retrieving voicemail messages. Users can listen to voicemail messages by accessing Nextiva Voice mailbox from a Nextiva phone or external phone. If calling from the primary phone, dial *86, otherwise if calling from any external phone, dial the phone number and press the * key during the voicemail greeting.
3. Select “Deleted Voicemails,” you will then be presented with a list of voicemail messages available for restore.