Turn off background app refresh
When this feature is enabled, your apps are constantly refreshing so that they can show you the most recent content when opened. This includes email synching, weather widgets updating, and feeds refreshing. For the iPhone: Turn off the background app refresh by going to Settings > General > Background App Refresh. For Android: Go to Settings > Data Usage > Restrict app background data. This will allow you to turn the feature off for all apps or you can pick and choose which ones you want to turn off. This will also help extend your phone’s battery life.
Disable apps that use a lot of data
There are certain apps that use more data than others, whether you use them frequently or not. For ones that you don’t use often, turn off cellular data. For the iPhone: Go to Settings > Cellular > then under “Use Cellular Data For” switch certain apps to off. Check out these six smart tricks for your cellphone everyone should know.