Using an Iphone to access the Internet increases the chances of using up the monthly 3G or 4G allowance unless you purchased an unlimited data plan. But the good news is that you can now reduce data usage on your iPhone. The recent launch of iOS 9 increases the possibility of more iPhone users exceeding their data plan for the month much faster. The new iOS 9 comes with a new feature called Wi-Fi Assist, which increases the smartphone data usage.
reduce data usage on ios

Measures to be Taken to Reduce Data Usage on Iphone includes:
Changing the iPhone Settings
Apps use mobile data more than users appreciate. The apps are enabled by default to use mobile data. Changing the settings in your iPhone will make the apps unable to use Wi-Fi when out of range, thus saving you mobile data.

Changing the App Settings
This measure is also great considering that each specific app has different settings that you need to change as well. The settings on some apps are good at restricting specific functions to Wi-Fi only, thus capable of consuming your monthly plan much earlier. Change settings in the apps.
Disabling Background App Refresh
The Background App Refresh has been a feature on iPhones since its introduction in iOS 7. As good as the feature is it can consume your data plan at a shocking rate. The best option is to disable the feature thus continue using your data plan for much longer.

Disabling data-consuming apps
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