Where to find font settings on your iPhone

Font changes on iPhone happen in two places: the system-wide settings that affect most apps, and individual app settings for apps that let you customize their own text. The easiest route is Settings > Display & Brightness > Text Size, which makes text larger or smaller across Mail, Messages, Notes, and many other built-in apps. If you want to change the actual typeface (the shape of the letters themselves) rather than just the size, that's a separate setting in Settings > Accessibility > Display & Text Size.

Not every app respects these system settings. Some apps like Safari, Chrome, and social media platforms have their own text size controls buried in their individual settings or menus. The steps below cover the main system approach first, then show you how to find app-specific controls when the system setting doesn't work.

Key Takeaways

  • Text size for most apps lives in Settings > Display & Brightness > Text Size, and you adjust it by dragging a slider left or right.
  • To change the actual font style (not just size), go to Settings > Accessibility > Display & Text Size and toggle on Larger Accessibility Sizes or Bold Text.
  • Some apps ignore system settings and have their own font controls in their individual settings menu or within the app itself.
  • If text is too small to read, you can also pinch-zoom within most apps, which temporarily enlarges text without changing your settings.

Changing text size for built-in apps

Open Settings on your home screen, then tap Display & Brightness. Scroll down until you see Text Size with a slider underneath it. The slider has an "A" on the left (smaller text) and an "A" on the right (larger text). Drag the slider to the right to make text bigger, or to the left to make it smaller. The preview text above the slider updates as you move it, so you can see the change in real time.

This setting affects Mail, Messages, Notes, Reminders, Calendar, and Stocks. It does not affect Safari, most social media apps, or apps that have their own text controls. When you're happy with the size, tap the back arrow or swipe back to exit Settings. The change takes effect when ready.

Making text bolder or changing the font style

To make all text appear bolder across your phone, go to Settings > Accessibility > Display & Text Size. Toggle on Bold Text. Your phone will restart, and when it comes back on, text throughout the system will appear thicker and darker. This works on top of the text size setting, so you can have both larger and bolder text at the same time.

If you want to change the actual typeface (the font family, not just the weight), that option is more limited on iPhone. Apple does not offer a system-wide font switcher. Some apps let you pick from a few typeface options in their own settings—check the app's settings menu or look for a text formatting button within the app itself. For most users, bold text and size adjustment are the main controls available.

Adjusting text in Safari and web browsers

Safari has its own text size control separate from the system setting. Open Safari, then tap the aA button in the address bar at the top of the screen. A menu appears with a small "A" and a large "A" with a slider between them. Drag the slider to adjust text size for that webpage. This change applies only to Safari and only to that browsing session.

If you use Chrome or another browser, look for a menu button (usually three dots) in the bottom right corner, then find Settings or Text Size within that menu. Each browser stores this setting differently, so you may need to adjust it separately in each one. These browser settings override the system text size, so changing your iPhone's Display & Brightness setting won't affect them.

Using accessibility features for very small text

If text is still too small even after you've increased the system size, go to Settings > Accessibility > Display & Text Size and toggle on Larger Accessibility Sizes. This unlocks even bigger text sizes than the standard Text Size slider offers. You'll then see a new slider that goes much further to the right, allowing text up to 188 points instead of the standard maximum.

You can combine Larger Accessibility Sizes with Bold Text for maximum readability. These settings work together and affect the same apps as the standard Text Size setting. If an app still doesn't respond, try pinching outward on the screen with two fingers to zoom in temporarily—this works in most apps and doesn't require changing any settings.

When individual apps have their own font controls

Some apps ignore your system settings and let you control text size only within the app itself. Mail, for example, has a text size option in its settings separate from the system setting. Open the app, look for a Settings or Preferences option (usually in a menu or gear icon), and search for text size, font, or display options.

Social media apps like Facebook, Instagram, and Twitter typically do not respond to the iPhone's system text size setting. Instead, they use the system's accessibility settings like Bold Text and Larger Accessibility Sizes. If an app's text is too small and the system settings don't help, check the app's own settings menu first. If that doesn't work, contact the app's support team—some apps straightforward don't offer text size controls.

Frequently Asked Questions

Will changing text size affect all my apps?

No. The system text size in Display & Brightness affects built-in apps like Mail and Messages, but not Safari, Chrome, or most third-party apps. Bold Text and Larger Accessibility Sizes have wider reach but still don't affect every app. You may need to adjust text size separately in individual apps.

Can I change the font to something other than the default?

iPhone does not have a system-wide font switcher that lets you change the typeface across all apps. Some individual apps offer font choices in their settings, but most do not. Bold Text makes the default font thicker, but you cannot change it to a completely different style like serif or monospace at the system level.

Why is text still small after I increased the text size?

The app you're using may have its own text size setting that overrides the system setting. Check the app's settings menu first. If that doesn't help, try toggling on Larger Accessibility Sizes in Settings > Accessibility > Display & Text Size, which offers even bigger sizes than the standard slider.

Does pinch-zooming permanently change the text size?

No. Pinch-zooming (spreading two fingers apart on the screen) enlarges text temporarily while you're viewing that page or app, but the change disappears when you close the app or navigate away. To make a permanent change, use the text size settings in Settings or within the app itself.

Can I undo a text size change?

Yes. Go back to Settings > Display & Brightness > Text Size and drag the slider back to where it was, or to the middle position for the default size. For Bold Text, return to Settings > Accessibility > Display & Text Size and toggle it off. Changes take effect when ready.