1. Keep track of your iPhone data usage regularly iOS Data
Before you can begin to manage your iPhone cellular data usage, it is important to measure yourself against your usage. Unlike other smartphones, iPhone does not allow you to place a data limit on your phone without making use of any external apps. For this reason, it is important to make it a habit to regularly view how much data you have used a couple of times a month. To view how much data, you have used go to Settings > Cellular (Or Mobile Data) and scroll down to see your Mobile Data Usage. If you have never reset this number, it will be very big. In many cases adding an application from the AppStore, such as MyDataMgr can provide valuable insight.
Many carriers have mobile apps or websites where you are able to view your data usage. If you are a Bell client, you may download the MyBell app or log into Bell Self Serve to get a glimpse of your data consumption.
2. Limit the use of your music streaming apps
If you are like me, you spend a lot of time commuting through traffic and turn to Spotify or SoundCloud to stream your favorite music. I think we all can agree that these apps are a blessing but they can also eat through your data allowance within a matter of days, depending on how often you stream. One step to preventing this from happening is to download your favorite tunes while you are on WIFI and try to listen to that during your drive. This is a simple hack but a very useful one.
3. Disable Background app refresh **Most useful when Roaming
iOS apps, even those that are not regularly used, can update in the background, loading new content even as they sit idle so that they are refreshed when and if you decide to re-engage with the app. If you are not always on WIFI, this can be a problem. To prevent any data from being consumed as a result of background app refresh, go to Settings > General > Background App Refresh and you can turn this setting off. You also have an option to select which apps you would like to update in the background. ***Please do note the above, that when this is enabled, automatic notifications for may applications will no longer be automatic. This can also limit email notifications...
4. Disable cellular app updates
If your apps update automatically, make sure they do only when you are connected to Wi-Fi. To make this modification go to Settings > iTunes & App Stores and turn off Use Cellular Data.
5. Disable iCloud Drive on your mobile phone
If you use iCloud Drive to transfer documents and pictures in and out of the cloud, those transfers can consume much of your data if you are doing so through your cellular connection. To restrict iCloud transfers exclusively to Wi-Fi, complete the following action: go to Settings > iCloud > iCloud Drive and scrolling to the bottom and turning off Use Cellular Data