Change the Font on iPhone

You can change the text size and toggle bold style for the system font on your iPhone. Using the Accessibility settings allows you to make the text even larger. If you have a jailbroken iPhone, you can change the actual font that the system uses.

Steps

Changing Font Size and Style

  1. Open the Settings app on your iPhone. You can change the size of some text on your iPhone, including most system apps and many popular third-party apps.
  2. Tap "Display & Brightness." This will show your display settings, including text size.
  3. Tap the "Text Size" option. This will open a new screen with a slider.
  4. Drag the slider to adjust the text size. You can drag it left or right to make the text smaller or bigger than the default size. The text on the screen will change size as a preview. This will apply to most Apple apps and other popular apps.
    • If the app does not support Dynamic Type, the font size in it will not change.
  5. Return to the "Display & Brightness" menu to save your changes. You'll see your changes applied to the Settings app immediately.
  6. Toggle "Bold Text" on to enable the bold style. This will change most text on your iPhone to bold, which may make it easier to read. You'll be prompted to restart your iPhone in order for the changes to be saved.
  7. Open the "General" section of the Settings app if you need larger text. The Accessibility settings allow you to enable larger text sizes that normally allowed.
  8. Select "Accessibility" and then "Larger Text." This will open a screen similar to the Text Size menu earlier.
  9. Toggle "Larger Accessibility Sizes" on. The slider below will expand to show additional size options.
  10. Drag the slider to the right to see the largest text sizes possible. This will only apply to apps that enable Dynamic Type as well as allow the larger Accessibility sizes. You won't see it everywhere. For example, the new sizes will not apply to the Settings app.[1]

Changing Fonts (Jailbroken iPhones)

  1. Jailbreak your iPhone. You cannot change the font that your iPhone uses unless you jailbreak it. Jailbreaking is not possible on some versions of iOS, including 10, 9.3.4, and 9.3.5.
  2. Open Cydia on your jailbroken iPhone. You'll find Cydia on one of your Home screens. If this is your first time launching Cydia after jailbreaking, it will likely automatically update and restart your iPhone.
  3. Search for "BytaFont" in Cydia. This app for your jailbroken iPhone is available for free from the ModMyi repository, which comes preconfigured in Cydia.
  4. Install the BytaFont app. Open the BytaFont details page, then tap "Install" and "Confirm" to begin the installation process. Your iPhone will automatically restart after the installation is complete.
  5. Launch BytaFont. This app will allow you to download and install new fonts for your iPhone. You'll find it on one of your Home screens after installing it in Cydia.
  6. Add fonts to BytaFont. Once you've loaded BytaFont, you can start adding fonts to it:
    • Tap the "BytaFont" tab.
    • Tap "Add new fonts."
    • Find the font you want to install and tap "View on Cydia."
    • Use Cydia to finish installing the font.
  7. Switch the fonts your iPhone uses. After you've installed some fonts, you can switch between them to replace your iPhone's system font:[2]
    • Open BytaFont and select the "Swap Mode" tab.
    • Tap the "Basic" option.
    • Tap the font you want to use.
    • Tap "Yes" to confirm. Your iPhone will restart and the font will be applied.

Sources and Citations