How do I fix 'Visual Voicemail is currently unavailable' on iPhone 16 Plus?

Live Voice Mail and Traditional Voice Mail

Live Voicemail (iOS Feature)

Live Voicemail is an iOS feature introduced in iOS 17 that provides real-time transcription of incoming voicemails as they are being recorded. This feature works on-device, meaning it does not rely on the carrier for transcription. However, your carrier must support conditional call forwarding for Live Voicemail to function properly.

Traditional Carrier Voicemail

Separate from Live Voicemail, regular voicemail is a carrier-provided service, meaning your cellular provider handles the voicemail storage and retrieval. This includes:

• • Basic Voicemail (Dial-in system)
  • Visual Voicemail (Introduced in iOS 1, displays voicemail messages in a list format within the Phone app)

Key Differences

• Live Voicemail transcribes in real-time on your device and allows you to pick up the call while the message is being recorded.
• Carrier Voicemail stores messages on the carrier's servers, and transcription (if available) is dependent on the carrier.
• Live Voicemail requires iOS 17+, while Carrier Voicemail works on all phones that support voicemail (even non-smartphones).

With Live Voicemail in iOS 17, you can view a real-time transcription of the message someone is leaving you as they speak, ...

Use Live Voicemail on your iPhone

Tap Voicemail, then tap Set Up Now. · Create a voicemail password. · Choose a greeting—Default or Custom; if you choose Custom, you can record a new greeting.

Set up your voicemail on your iPhone

Please get in touch with your Carrier (Cellular Service Provider) as VoiceMail is a carrier-specific feature --> Check your voicemail on iPhone - Apple Support

VoiceMail, whether it's visual voicemail or the traditional voicemail service, is a carrier-specific feature that depends on your cellular service provider. If you are experiencing any issues related to voicemail on your iPhone, it's essential to get in touch with your carrier for assistance. Here's how you can check your voicemail on an iPhone and what steps you should take if you encounter any problems:

Checking Voicemail on iPhone:

1. Visual Voicemail: On most iPhones and carriers that support visual voicemail, you can access your voicemail messages directly from the Phone app. Open the Phone app, and you should see a "Voicemail" tab at the bottom. Tap on it to access your voicemail messages in a visual and user-friendly interface.
2. Traditional Voicemail: If your carrier doesn't offer visual voicemail or if you prefer the traditional voicemail service, you can access your voicemail by dialing your carrier's voicemail number from your iPhone.

Troubleshooting Voicemail Issues:

1. Voicemail Not Working: If you are experiencing issues with accessing or receiving voicemail messages, it's essential to contact your carrier's customer support. They can help you troubleshoot the problem and ensure that your voicemail service is set up correctly.
2. eSIM Users: If your iPhone uses an eSIM, ensure that the eSIM is activated and set up correctly with your carrier. Any issues with the eSIM activation can affect voicemail functionality.
3. Network and Coverage: Sometimes, voicemail issues may be related to network coverage or signal strength. Check that your device has a stable cellular connection.

You may try some of these steps, please check after each step...

The error message "Voicemail error performing request unknown iPhone" typically indicates an issue with the voicemail feature on your iPhone. There are several potential reasons for this error, and here are some troubleshooting steps you can follow to resolve the problem:

1. Ensure that your iPhone has a stable internet or cellular connection. Voicemail services may require a data connection to function correctly.
2. Check if there are any carrier settings updates available for your iPhone. Carrier updates can sometimes resolve voicemail-related issues.
3. Contact your carrier's customer support to ensure there are no known issues with their voicemail services in your area.
4. If you have call forwarding enabled, try disabling it to see if it resolves the voicemail problem. Go to "Settings" > "Phone" > "Call Forwarding" and turn it off if it's enabled.