Tech Trends

Are you one of those people who always worries about how much data you use on your iPhone or other iOS device? As the end of your carrier’s billing cycle nears, do you wonder if you or a family member will cross the line over your data limit and incur the dreaded extra charges?

There’s good news. In recent versions of Apple’s operating system, including iOS 13, Apple makes it easier than ever to obsess over your data usage and take steps to mitigate it. We’ll show you how to check data usage on an iPhone whenever you like with this quick process, and we’ll explain how it can be used to limit your data use.

Check Your Data Usage

Understanding data usage is extremely important, especially on a limited data plan. Keeping an eye on how much data you’re using can prevent you from encountering pricey overage charges or having your data speeds throttled. Here’s how to check how much data you’ve been using with tools built into iOS:

Step 1: On your iPhone or iPad, open the Settings app.

Step 2: Tap the Cellular option. Sometimes, it may be called Mobile Data or Cellular Data, depending on your device, iOS version, and regional settings.

Step 3: Scroll down to the section labelled Cellular Data.

Step 4: From here, you can see an overview of your data usage for the current period, including the total data used, data used while roaming (which usually costs more), and data used by each of your apps, sorted from the highest to the lowest. A toggle switch beside each app allows you to disable cellular data access for that app to help reduce your data usage.

Reset Your Data Usage Counters

When you check your data usage, the Current Period indicator can be misleading. It may sound like this automatically resets with each billing period, but that’s not the case. The numbers keep accumulating until you reset it manually, and there’s no way to schedule this — you’ll have to set a reminder for yourself every month to ensure the numbers are for a specific time frame. Here’s how to reset your data usage counters:

Step 1: On your iPhone or iPad, open the Settings app.

Step 2: Tap the Cellular option. Sometimes, it may be called Mobile Data or Cellular Data, depending on your device, iOS version, and regional settings.

Step 3: Scroll down to the very bottom of this screen.

Step 4: Note the Last Reset_ date and time. This indicates the beginning of the Current Period for all the numbers above thi

Step 5: Tap Reset Statistics. This clears all of the data counters, as well as the Current Period call time. Note that the Lifetime call time is tied to your specific iPhone hardware and cannot be reset.

Turn Off Cellular Data

If you find yourself approaching the limits of your monthly data allotment, you may need to take the extreme approach and disable cellular data entirely. This will limit your communication options to voice calls and SMS/MMS text messages whenever you’re away from a Wi-Fi network, but it will also guarantee that you won’t be charged for any extra data use. Off really means off in this case. Here’s how to quickly toggle cellular data:

Step 1: From your iPhone or iPad home screen, swipe from the top-right corner to bring up the iOS Control Center. If you’re using an iPhone with a Home button, such as an iPhone 8 or iPhone SE, swipe up from the bottom instead.

Step 2: Tap the green button in the top-left panel of the control centre to turn off cellular data. The button should turn grey.

Step 3: You can also tap and hold on to this panel and expand it to confirm that cellular data is off.

Step 4: Repeat the above steps to turn your cellular data back on. The button should turn green when cellular data is enabled.

Turn off Wi-Fi Assist

Your iPhone includes Wi-Fi Assist, which uses cellular data to back up your Wi-Fi connection when it’s not working as it should. While this doesn’t normally use much data, it can become problematic if you regularly hang out on slow or spotty Wi-Fi networks. Fortunately, you can check how much data it’s been using, and turn it off if you don’t want to risk surprises. Here’s how:

Step 1: On your iPhone or iPad, open the Settings app.

Step 2: Tap the Cellular option. In some cases, it may be called Mobile Data or Cellular Data, depending on your device, iOS version, and regional settings.

Step 3: Scroll down to the very bottom of this screen.

Step 4: Look for Wi-Fi Assist. It should be right below your list of apps

Step 5: Note the amount of data that Wi-Fi Assist has used during the current period. This represents when your iPhone or iPad was connected to Wi-Fi but needed to return to the cellular network. In most cases, this number shouldn’t exceed a few hundred kilobytes.

Step 6: If you find this number is higher than you’d like or don’t want to risk using too much data, tap the switch to turn Wi-Fi Assist off. This will ensure that what happens on your Wi-Fi network stays on your Wi-Fi network.

Turn Off Cellular Data When Travelling (Roaming)

Using cellular data when travelling can quickly get very expensive, as you normally pay extra for using other carriers’ cellular networks. This is called Roaming. Fortunately, your iPhone and iPad know when they’re on your carrier’s network or roaming on a foreign network, so you can easily disable cellular data only while roaming without worrying about turning it off entirely. Best of all, this means you can leave it off entirely, so you’ll never risk roaming charges in the first place. Here’s how:

Step 1: On your iPhone or iPad, open the Settings app.

Step 2: Tap the Cellular option. In some cases, it may be called Mobile Data or Cellular Data, depending on your device, iOS version, and regional settings.

Step 3: At the top of this screen, look for Cellular Data Options. If this says Roaming Off, then you’re OK — cellular data will be automatically disabled as soon your device detects that it’s roaming on another carrier’s network.

Step 4: If you see Roaming On instead, tap this to open your Cellular Data Options.

Step 5: Tap the switch beside Data Roaming at the top of the screen to toggle it off.

Save Data With Low Data Mode

If you’re frequently bumping up against the limits of your data plan but still want to get as much out of it as possible, then you can take advantage of the built-in Low Data Mode feature on your iPhone or iPad. This single option automatically reduces data usage and is the only way to turn on data-saving settings in many of Apple’s built-in apps. This doesn’t disable cellular data for any of your apps but ensures they use less of it.

For example, enabling Low Data Mode will lower the video bit rate for FaceTime calls to optimize it for lower bandwidth. This saves data and also makes FaceTime run more smoothly when you’re on a slower connection, like an older 3G network. There’s no individual setting for this — turning on Low Data Mode is the only way to get at it.

Enabling Low Data Mode_ will also disable automatic downloads and iCloud backups, pause updates to your iCloud Photo Library, and disable background refresh for all of your apps. It also reduces the quality of streaming content in all of Apple’s built-in apps, such as Music, TV, and Podcasts, although you’ll still want to be cautious as not all third-party apps respect this setting.

Here’s how to enable Low Data Mode:

Step 1: On your iPhone or iPad, open the Settings app.

Step 2: Tap the Cellular option. In some cases, it may be called Mobile Data or Cellular Data, depending on your device, iOS version, and regional settings.

Step 3: Tap Cellular Data Options.

Step 4: Tap Data Mode.

Step 5: TapLow Data Mode.

Note that if you have an iPhone 12 or newer and are on a 5G plan, you’ll see another option here: Allow More Data on 5G. This does the opposite, allowing higher-speed 5G data to be used for things that normally only run over a Wi-Fi connection, such as automatic iCloud backups and software updates.

Keeping track of your data usage can be crucial in avoiding nasty overage charges at the end of the month, especially if you’re on a limited data plan. Although many carriers are offering more generous data allotments these days, an equal number of apps are increasing their data usage to take advantage of those higher caps, so just because you have more data in your plan doesn’t mean you shouldn’t still keep and eye on what’s using it.