The original post: /r/mullvadvpn by /u/D-man5005 on 2024-10-15 20:50:59.

Trying to figure out what's going on and whether it's a technical issue or ISP policy issue. This is happening on an Android 13 phone.

On Tmobile data and while not using a VPN, I cannot access websites for Mullvad or a few other major VPN providers. I get a cert issue thrown up, and this happens in all different browsers. When I turn my VPN on, no problem reaching the websites. They also load fine using home Wi-Fi without a VPN running.

Additionally, a year ago I set the ad-blocking Mullvad DNS server as my private DNS and it worked great until about 3 months ago when I suddenly couldn't connect to it, or the other Mullvad DNS servers. Again, this was without a VPN running.

I can turn on the Mullvad VPN and that connection is made just fine over cell data, it's the peripherals I'm having issues with (DNS server and main website). Any thoughts or similar experiences?