Does anyone know how to force iPhone to only use IPV4 in APN configuration?
It is not possible to disable IPv6 on Apple’s mobile platforms at the system-level, although the OpenVPN Connect app can route connections through IPv4 only. Just go to settings → and select IPv6 → IPV4-only tunnel.
Maybe write custom .mobileconfig file to have only IPv4 APN configuration but that doesn’t override system default. I tried example enable IPv6 APN so I have to use another APN name (valid one) to get IPv6 working over mobile network.
But why disable IPv6? If have any issue should provider fix it.