1: Install our VPN app for Android from Play Store or by searching for "vpn.ac" in Play Store app, directly on your phone. 
2: open the app, insert your VPN credentials, select location and connect. 
3. If you are in China or other censoring country, in the Settings tab enable "Use alternative server list". Eventually, also enable "Small Packets".
4. In the Exclude Apps tab you can enable selective routing policy, like for example using or excluding the VPN for specific apps.