Check Data Usage on an iPhone

This article teaches you how to view your iPhone's data usage since the last time you reset the data statistics.

Steps

Using Your iPhone's Built-in Features

  1. Open Settings. It's a grey app with gears that you'll likely find on the Home Screen.
  2. Tap Cellular. This option is near the top of the "Settings" page.
    • On phones that use a U.K. English keyboard, tap Mobile Data.
  3. Scroll down to view the "Cellular Data Usage" section. You'll see two options listed below this heading: "Current Period," which reflects all data usage since you last cleared your data usage statistics, and "Current Period Roaming," which shows data usage for areas in which your phone wasn't covered by the carrier (e.g., international travel).
    • "Current Period" data does not automatically reset for your billing cycle. You can reset your data usage statistics by tapping Reset Statistics at the bottom of the page.
  4. Scroll down to view a list of apps that use Cellular Data. These will be listed beneath the "USE CELLULAR DATA FOR" heading; any app with a green switch to its right is able to use data.
    • The number below an app's name reflects how many kilobytes (KB), megabytes (MB), or gigabytes (GB) that app has used since the "Current Period" was last reset.

Requesting Information From Your Carrier

  1. Call your carrier's data hotline. While checking the data usage in your Settings will show you how much you've used, it won't show you what your limit is, and sometimes the date and measurement is off compared to your carrier. You can quickly check how close you are to your monthly limit by entering the code for your carrier into the Phone app:
    • Verizon - Dial #DATA and press the "Call" button. You will receive a text message showing all your usage details for that billing cycle.
    • AT&T - Dial *DATA# and press the "Call" button. You will receive a text message showing how much data you've used versus your monthly limit.
    • T-Mobile - Dial #WEB# and press the "Call" button. You will receive a text message showing how much data you've used versus your monthly limit.
    • Sprint - Dial *4 and press the "Call" button. Follow the voice prompts to check your usage for the billing period.
    • Idea (IN) - Dial *121# and press the "Call" button. You will receive a reply with your usage.
  2. Consider downloading your carrier's app from the App Store. Most cellular carriers have an app you can download to your iPhone; once you do so, you'll be able to monitor your data usage and plan information from within the app.
  3. Contact your carrier directly. If all else fails, calling your carrier's support line or going to your local carrier's store directly will allow them to tell you how much data you've used and how much remains in your current cycle, as well as upgrade your plan if you feel it would be beneficial.

Tips

  • Cellular Usage is wireless data you’ve used for web browsing, email, and more that was provided by your carrier and not a Wi-Fi network.
  • To calculate how much data you use over a period of time, tap the Reset Statistics button and then check the data you have used from that point onward at a specified time.
  • Tether Data is data used while your iPhone has been connected to another device using the Personal Hotspot feature.

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