The situation regarding the use of VPN is different between Mac and Windows and iPhone and Android. You might not need to have your VPN connection on for mobile devices all the time. This is because VPNs are not very good with cellular connections. Where there might be a poor performance on mobile phones, there is no need to have a VPN connection on in your phones forever and you must disconnect it when necessary. Usually, VPN operates through an app on android, so in order to remove or disable it from your android, you can simply uninstall the app. However, disconnecting VPN can also take place using system settings. Follow the following steps to do so.