VPN uses cellular data

We have installed VPN on the iPhone, and it appears to be using at least 6.5GB worth of data? How come it is using data? Shouldn’t this VPN only redirects to the cloudfaire DNS server only, not using data?

It depends on the mode you’re using the cient in. If you are using Warp mode it is proxing your traffic to the interwebs, so in that event it’s not using traffic so much as it is proxying other application traffic through it.

It is possible it is on Warp mode. That means is like using VPN and using more data to encypt?

The by itself should not use a lot of data as compared to the Warp mode?