6. Automatic Downloads
Downloading different kind of apps is one of the best things about using iPhones or any other smartphones for that matter. However, these apps are constantly looking to download additional files or update themselves. And as a result, they consume more than half of your data package and end up creating a huge bill at the end of the month. For such reasons, just go to the App Store and turn off the automatic downloads from the settings. Or you could confine the settings to just download using Wi-Fi only.