Patent ID: 8824443

Claim:
A method performed under control of a mobile operating server, comprising: determining whether there is an authenticated Wi-Fi access point around a mobile device; if there is an authenticated Wi-Fi access point around the mobile device, instructing the mobile device to connect to a Wi-Fi network provided by the authenticated Wi-Fi access point; if there is no authenticated Wi-Fi access point around the mobile device, determining whether there is a non-authenticated Wi-Fi access point whose capacity is over a predetermined value around the mobile device; if there is a non-authenticated Wi-Fi access point whose capacity is over the predetermined value around the mobile device, instructing the mobile device to connect to a Wi-Fi network provided by the non-authenticated Wi-Fi access point whose capacity is over the predetermined value; initiating a virtual private network (VPN) with the mobile device connected to the Wi-Fi network provided by the authenticated Wi-Fi access point or the non-authenticated Wi-Fi access point; and instructing the mobile device to disable uplink transmission from the mobile device to the authenticated Wi-Fi access point or the non-authenticated Wi-Fi access point, and to maintain downlink transmission from the authenticated Wi-Fi access point or the non-authenticated Wi-Fi access point to the mobile device.