iOS11 Connecting to VPN prefers 4G and drops WIFI (according to the UI)
I am using a VPN client to connect to their servers. When not connected I see the usual WIFI fan on the lock/home screens. When VPN is turned on it shows 4G.
Heading over to settings shows it's connected to WIFI, so its not clear what it's actually using. I assume its a bug in the UI, and not the Wifi assist that's now broken (speed test at least suggests this is the case)?
iPhone 6s, iOS 11.0.3