Hi alking, if you need to access sites that are not accessible via the "public" internet (by domain name or IP address known to your current internet service provider), you may need an additional piece of software such as a VPN client or Tor app that lets you visit addresses that are not exposed on public servers. I think there probably are better websites to find out how to do that on Android. Perhaps a more general Android forum such as: https://forums.androidcentral.com/