4 Ways to Control Your Data Usage
– Change the Network settings in your phone to choose WiFi networks before cellular networks.
– Close all your apps. Exited apps continue running and may use data.
– If you have an iPhone, make sure WiFi Assist is turned OFF. Go to Settings>Cellular>Scroll to bottom and you’ll see Wifi Assist, make sure it is turned off.
– Try an app that compresses your data like Onavo.