Before you can start to manage your iPhone cellular data usage, you need to keep tabs on how much you’re using. To view how much data you’ve used, go to Settings > Mobile Data (or Cellular Data) and scroll down to see your mobile data usage for the current period. Below this you’ll see how much data has been used by each app.
Wondering how long the Current Period was? To find out that you will need to scroll all the way to the bottom to see when you last reset the statistics.
Our advice is to get in the habit of resetting it every month; perhaps set an alert on your phone so you remember to reset it on the day your network resets your allowance. To reset your statistics, scroll down to the bottom of the page and tap Reset Statistics. Get in the habit of looking here once in a while so you can see if you’re on target to stay under the limit, or if you’re overdoing it and need to rein things in.
You can also Add Data Plan on this Mobile Data page of Settings, which should make managing your data usage even more precise.
Alternatively you could take a look at Data Usage (49p/99c), an app that we’ve used for the past three years to keep track of our monthly data usage.
The app looks to measure cellular and Wi-Fi data usage in real time, and offers this in two different ways – via the app itself, and via a handy Today widget that can be added to your notification centre.
The app asks you to input your monthly data limit and then produces statistics like how much you should use per day until your data is renewed, or if you’re likely to go over your allowance in any given month.
Users can also take a look back at the data from any month in the past, as long as the app was being used then, of course.