How to Change Text Size on iPhone for Individual Apps

* This article is from our Tip of the Day newsletter. . *

Sure, you can adjust the text size for your entire iPhone, but what if it's just one or two apps that are hard to read? You can decrease or increase text size for one app or several instead of changing font size across all apps! We'll walk you through setup and text size adjustment on iPhone for individual apps.

Related: How to Hide Apps on the iPhone & Find Them Later

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Why You'll Love This Tip

  • Stop squinting to see tiny print in one app—adjust the font size for apps on iPhone on an app-by-app basis.
  • Adjusting text size on iPhone as a whole can make some app text too big or too small. Customize app font size with this quick adjustment slider.

How to Add Font Size to Control Center

Before you can adjust text size on iPhone for each app, you'll need to add the Text Size adjustment feature to the Control Center on your iPhone. Once you've done that, you can move on to the next section to learn how to change font size in apps! Want to see more iPhone tricks? Sign up for our free Tip of the Day newsletter.

  1. Open the Settings app

    change text size on iPhone just one app
  2. Scroll down and tap on Control Center.

    change text size on iPhone just one app
  3. First, make sure the Access Within Apps toggle is enabled. The toggle will be green when enabled.

    increase text size on iPhone for each app
  4. In the Included Controls section, you'll see items that are already available within your Control Center. Note: If you see Text Size in this section, that means it is already in your Control Center. Skip to the next section.

    adjust text size on iPhone just one app
  5. Scroll down to the More Controls section to see additional features available to add.

    adjust text size on iPhone just one app
  6. Tap on the green + icon next to Text Size.

    adjust font size on iPhone just one app
  7. Text Size will now be available when you open the Control Center on your iPhone.

Once you've completed these steps, you can exit Settings and move on to the next section to use this feature to adjust app text sizes.

How to Increase iPhone Font Size for Individual Apps

Now that you have access to Text Size in the Control Center on your iPhone, let's learn how to change text size on iPhone for each app that's hard to read. 

  1. First, open the app for which you want to change text size.
  2. Open the Control Center by swiping down from the top-right corner of your screen. For iPhones with a Home button, swipe up from the bottom of the screen.

    adjust font size on iPhone just one app
  3. Tap the Text Size icon to adjust font size.

    make font bigger on iPhone just one app
  4. If the All Apps icon is blue, tap the [This App] Only icon. The name of the app will change depending on which app you're adjusting at the time.

    make font bigger on iPhone just one app
  5. Use your finger to move the slider up or down to change font size for the app. The more white bars, the larger the font size.

    make text bigger on iPhone just one app
  6. Look at the top of the screen for a preview of the actual size of the font.

    make text bigger on iPhone just one app
  7. When you're finished, tap a blank part of the screen to exit, then do so once more.

Now you know how to change text size for iPhone apps individually! Just repeat these steps while in each app to customize the text on an app-by-app basis. Next, learn how to increase font size on iPad.

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Author Details

Erin MacPherson's picture

Author Details

Erin MacPherson

Erin is a Web Editor for iPhone Life and has been a writer, editor, and researcher for many years. She has a degree in communication with an emphasis on psychology and communication, and has spent many of her professional years as a coach in various business and specialty fields. Erin officially joined the ranks of iPhone and Apple users everywhere around nine years ago, and has since enjoyed the unique and customized feel of Apple technology and its many gadgets. When she’s not working, Erin and her son enjoy outdoor adventures, camping, and spending time with their eclectic collection of pets.