Making Wireguard VPN work with EE 4G in the UK

For the past couple of months I have been running a permanent VPN on my iPhone. There are a number of advantages:

Occasionally I’ll leave the house and the Wireguard app will activate my VPN but the VPN won’t actually connect, it just sits there. Toggling the VPN on/off usually causes it to connect. Or frustratingly I’ll be out and about and the VPN will refuse to work unless I toggle VPN.

A number of people have reported similar behaviour on the T-Mobile network in the states when transitioning from Wi-Fi to 4G/LTE, presumably they use the same IPv6 to IPv4 NAT technology that appears to contribute to the problem.

There is a fix (workaround?) to this and that is to force EE to use IPv4 only. I believe I only experience this problem because my WireGuard endpoint is IPv4.

  1. Download and install this profile to your iPhone. You can view the source code of the profile before installing here
  2. Toggle airplane mode
  3. Enjoy Wireguard without frequent network connectivity problems!

Thanks to Duncan for creating the profile.