I recently found out that my mobile provider “leaks” (if you can say that) while I’ve using a VPN. On wifi it is completely fine.

On my phone when I go to the Speedtest app, my Mobile ISP will show up like full name while connected to a VPN. However, if I’m on wifi it will show the VPN’s server provider name instead.

Also instead of the wave wifi icon it shows “LTE”. Is my mobile data actually leaking even though I’m connected to a VPN? How can I fix this?