betha45 - The last thing we would ever want is for you to run out of data, especially when you are using Wi-Fi. We understand that learning how to save data is essential, and we want to help you. Please make sure that the Wi-Fi Assist setting on your device is Off (white). Please follow the steps in this link. http://spr.ly/6602EklHE I would recommend closing recently used apps. http://spr.ly/6603EklH1 Also, make sure that the Automatic Software Update setting is turned Off (white) Settings > General > Software Update.