How do I fix “Visual Voicemail unavailable” on iPhone 15 with no option to turn it on?

My i phone 15 voicemail is not working and showing visual voice call unavailable and there is no option to turn it on in the settings

[Re-Titled by Moderator]

Original Title: my i phone 15 voicel mail is unavailable how to. fix this

iPhone 15, iOS 18

Posted on Jul 24, 2025 9:01 AM

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When Calling my Phone when it's powered off, there is no voicemail message, just "The Wireless Caller is not available" message. Initially, when I upgraded from iPhone 13 Pro Max to iPhone 16 Pro Max, I was having issues with the voicemail not working at all. Whenever I sent someone to voicemail, it would always give them the message, "The Wireless caller you are trying to reach is not available" and it proceeded to not allow them to record a voicemail. After quite some time with AT&T's lackluster tech support, it seems like that issue is fixed. However, when my phone is off, I am experiencing the same issue. Surely my phone doesn't have to be on to receive voicemails, it never used to do that. Does anyone have any insight?
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2 replies

Jul 24, 2025 9:06 AM in response to tanvi166

You’ll need to contact your carrier to resolve.

Voice Mail is wholly a carrier-provisioned application.

若穎

Level 1

12 points

Jul 24, 2025 9:26 AM in response to tanvi166

我是iPhone 16 Pro我沒有買過iPhone 15

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How do I fix “Visual Voicemail unavailable” on iPhone 15 with no option to turn it on?

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