You can switch off the Wi-Fi connection to your VR300 on the device itself. To do this, hold the Spot and Eco buttons down together for two seconds. This will switch off your VR300's Wi-Fi module, but the connection will remain saved in your device. You can switch the Wi-Fi module on again by holding down the Spot and Eco buttons for three seconds. This will reactivate the Wi-Fi module, and your VR300 will connect to your Wi-Fi using the saved connection data.