How to make openVPN on iPhone via GSM always on?

Question

iOS

Hello.
Which client to choose so that all traffic on the iPhone always goes through the openvpn tunnel (cellular data transfer)
I use the OpenVPN client and when the network disappears and then reappears, the vpn tunnel _sometimes_ does not connect back, for example, when there is an error connecting to the server - OpenVPN client does not try to connect again and this is not configured anywhere.
How can I make sure that the VPN tunnel is always connected, and when it is not connected, so that traffic does not go over an unencrypted network?
What OpenVPN clients do you use?
Thank you.

Answer 1

The only way that worked for me was to put the openvpn config into the .mobileconfig file. how to do it is written approximately here https://www.derman.com/blogs/iOS-OpenVPN-OnDemand-Setup