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  1. #1
    Join Date
    Jan 2022
    Feedback Score

    VoLTE not working with VPN. Help?

    We have some iPhones supervised with MDM which use an always on VPN that cannot be disabled. It seems that VoLTE doesn't work right with this setup. When trying to make a call the phone hangs for like 20 seconds after which point it'll either die saying 'call failed', pretend to connect but there's no audio, or eventually connect properly.

    Does anyone know what we can modify to allow VoLTE through properly? There's nothing obvious in the logs.

  2. #2
    Join Date
    Jul 2017
    iPhone 13, iPad 8th Gen, 13” MacBook Pro 2017, Apple TV 4.
    Feedback Score
    Either they allow the use of VoLTE within MDM (if there’s such a thing) or turn VoLTE off.

    Sent from my iPhone 13 Pro Max using Tapatalk

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