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How to Change the Font Size on an iPhone

Improve text readability by altering size and other settings

By Heinz Tschabitscher Heinz Tschabitscher Writer University of Vienna A former freelance contributor who has reviewed hundreds of email programs and services since 1997. lifewire's editorial guidelines Updated on August 8, 2021 Reviewed by Ryan Perian Reviewed by Ryan Perian Western Governors University Ryan Perian is a certified IT specialist who holds numerous IT certifications and has 12+ years' experience working in the IT industry support and management positions. lifewire's editorial guidelines Tweet Share Email Tweet Share Email

In This Article

Expand Jump to a Section Dynamic Type and Text Sizes in Apps Step by Step: Make the Font Bigger or Smaller Step by Step: Make Text Even Larger Extra: Other Accessibility Features to Improve Readability While you can zoom in on an email with finger gestures without adjusting the text size setting on your iPhone, iPad, or iPod touch, you'll need to zoom in on every app to increase the text size. However, you can change the size of text across every app at once using the slider in the Settings app. If you prefer a smaller text size that fits more content in a small screen, such as on an iPhone versus an iPad, move the slider to make the text size smaller. Instructions in this article apply to devices running at least iOS 10, but may also work with older versions of iOS. The examples show an iPhone running iOS 12.

Dynamic Type and Text Sizes in Apps

Dynamic Type is the name of the iOS feature that adjusts the text size. Adjusting the size of the text isn't universal on an iOS device. Apps that support Dynamic Type take advantage of the customizable text sizes. Text in apps that don't support Dynamic Type will remain unchanged. Later versions of Apple apps support Dynamic Type, including Mail, Notes, Messages, and Calendar. Accessibility settings can be used to further increase the font size and contrast.

How to Make the Font Bigger or Smaller

To use the Text Size option to adjust the font size on an iOS device: Open the Settings app. Go to Display & Brightness > Text Size. On versions of iOS older than iOS 11, go to General.
Drag the slider right to increase the text size, or left to decrease the text size. The sample text changes as you adjust the text size. On iOS 11 or newer, add the Text Size shortcut to Control Center for quicker access.

How to Make Text Even Larger

If these adjustments didn't make the text large enough, use the Accessibility settings to increase the text size. This adjustment forces even larger text in Mail and other apps that support Dynamic Type and is useful when it's difficult to read the text on a mobile device. Go to Settings > General > Accessibility. Tap Larger Text. Turn on the Larger Accessibility Sizes toggle switch. Drag the slider to the right to make the font larger.

Other Accessibility Features to Improve Readability

Also located from the Accessibility page in the device settings is Zoom. This magnifies the entire screen. Double-tap with three fingers to zoom, and drag three fingers to move around the screen. Bold Text is another setting that makes it easier to read on an iPhone, iPad, or iPod touch. This setting makes Dynamic Type text bold. Enable Increase Contrast to make other text styling adjustments, and Reduce Transparency to reduce transparency and blurs, both of which can increase legibility. How to Download Fonts on iPhone Was this page helpful? Thanks for letting us know! Get the Latest Tech News Delivered Every Day Subscribe Tell us why! Other Not enough details Hard to understand Submit More from Lifewire How to Zoom In or Out With Your Keyboard How to Modify Text Size in Internet Explorer How to Change the Font Size on Your Screen How to Zoom in or out on Windows or a Mac How to Change the Font Size on Kindle How to Change a Google Docs Background to a Picture A Guide to the iPad's Accessibility Settings How to Use the iPhone Camera How to Change Text Size on Android How to Set Up Flash Light Notifications on Your Phone The iPhone Orange Dot: What It Is and How to Get Rid of It How to Use Immersive Reader in Microsoft Edge How to Use Markup on an iPhone, iPad, or iPod Touch How to Fix It When There is No Sound on Your iPhone The History of iOS, from Version 1.0 to 16.0 How to Make High-Resolution Images Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up By clicking “Accept All Cookies”, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. Cookies Settings Accept All Cookies