The fastest way to make text bigger on your iPhone
You can make text larger on your iPhone in three ways: adjust the system-wide font size in Settings, turn on larger accessibility text, or zoom in on individual apps. The method you choose depends on whether you want the change to affect everything on your phone or just specific apps.
The quickest route for most people is the Display & Text Size setting, which enlarges text across Mail, Messages, Notes, and other built-in apps without changing icon sizes or layout. If you need text even larger, the Accessibility settings let you go bigger still. For temporary zooming in a single app, you can pinch and zoom or use the magnifier.
Key Takeaways
- Display & Text Size in Settings changes font size across Mail, Messages, Notes, and Calendar without affecting your home screen layout.
- Larger Accessibility Sizes in Settings goes bigger than Display & Text Size and works in more apps, though some third-party apps may not respond to it.
- You can zoom temporarily in most apps by pinching the screen with two fingers, which does not save as a permanent setting.
- Bold Text in Settings makes all text on your iPhone heavier and darker, which can make small text easier to read even without enlarging it.
- Some apps like Safari and Chrome have their own font size controls in their settings or menus, separate from your iPhone's system settings.
Changing font size through Display & Text Size
Open Settings, then tap Display & Text Size. You will see a slider at the bottom labeled with an A on the left and a larger A on the right. Drag the slider to the right to enlarge text, or to the left to make it smaller. The preview text above the slider shows you how the change will look.
This method affects text in Apple's built-in apps: Mail, Messages, Notes, Calendar, Reminders, and Stocks. It does not change the size of app icons, the home screen layout, or text in most third-party apps like Facebook or Instagram. When you finish, tap the back arrow or swipe back to return to Settings.
The change takes effect when ready. If the text is still not large enough, you can go back and move the slider further, or try the Larger Accessibility Sizes option instead.
Using Larger Accessibility Sizes for maximum enlargement
If Display & Text Size does not go large enough, open Settings, then tap Accessibility. Scroll down and tap Display & Text Size. At the top, toggle on Larger Accessibility Sizes. A new slider will appear below it, and you can now drag it much further to the right than the standard Display & Text Size slider allows.
Larger Accessibility Sizes affects more apps than the standard setting does, including some third-party apps that are built to respond to accessibility settings. However, not every app will respond — some older or less-maintained apps may ignore this setting entirely. The only way to know is to turn it on and check the apps you use most.
This setting also enlarges text in system menus, notifications, and settings screens themselves, so your entire phone becomes larger. If that is too much, stick with the standard Display & Text Size slider instead.
Making text darker and heavier with Bold Text
Bold Text makes every word on your iPhone appear heavier and darker, which can make small text easier to read without actually making it larger. Open Settings, tap Accessibility, then Display & Text Size, and toggle on Bold Text.
Your iPhone will ask you to restart to explore the change. Tap Continue, and your phone will shut down and turn back on. When it restarts, all text system-wide will be bolder. You can combine this with either of the font size methods above for even more readability.
If you change your mind, go back to the same location and toggle Bold Text off. Your phone will restart again, and text will return to normal weight.
Zooming in temporarily within individual apps
You can zoom in on text in most iPhone apps without changing your settings. Place two fingers on the screen and pinch outward (spread your fingers apart). The app will zoom in, making everything larger. Pinch inward (bring your fingers together) to zoom back out.
This zoom does not save — when you close the app or navigate to a different screen, the zoom resets. It is useful for reading something once without permanently changing your phone's settings. Some apps like Safari, Mail, and Notes support this pinch-to-zoom gesture. Others, particularly games and social media apps, may not.
Adjusting font size in Safari and web browsers
Safari has its own font size control separate from your iPhone's system settings. Open Safari, load a webpage, and tap the AA button in the address bar at the top. Tap the larger A to increase text size, or the smaller A to decrease it. You can also tap Settings to access more detailed text options.
This setting applies only to Safari and only to web pages — it does not affect text in apps or emails. If you use Chrome, Firefox, or another browser, look for a menu button (usually three dots or lines) and search for text size or font size in the settings.
If you have already set a larger font size in your iPhone's Display & Text Size settings, Safari will respect that as well. The Safari AA button lets you make further adjustments on top of your system setting.
What to do if an app does not respond to your font size changes
Some apps, especially older ones or those not regularly updated, do not respond to your iPhone's font size settings. If text in a particular app is still too small after you have enlarged your system font, you have a few options.
First, check whether that app has its own settings menu. Open the app, look for a Settings or Preferences option (often a gear icon), and search for text size, font size, or display options. Many apps like Kindle, News, and email clients have their own controls.
If the app has no built-in font size control, try using the pinch-to-zoom gesture to zoom in temporarily while you read. If that does not work either, the app may not support zooming. In that case, your only options are to contact the app's developer and request the feature, or to use a different app that does support larger text.
Frequently Asked Questions
Will changing font size affect my home screen or app icons?
No. The Display & Text Size setting changes only the text inside apps like Mail and Messages, not the size of app icons on your home screen or the names beneath them. Larger Accessibility Sizes will enlarge text in system menus and settings, but still does not change icon sizes.
Can I set different font sizes for different apps?
Not through your iPhone's system settings — those explore to all compatible apps at once. However, individual apps like Safari, Kindle, and some email clients have their own font size controls in their settings, so you can adjust them separately from your system setting.
Does zooming in with the pinch gesture save when I close the app?
No. Pinch-to-zoom is temporary. When you close the app or navigate away, the zoom resets to normal. If you want a permanent change, use Display & Text Size or Larger Accessibility Sizes in Settings instead.
What is the difference between Display & Text Size and Larger Accessibility Sizes?
Display & Text Size is the standard option and works in Apple's built-in apps. Larger Accessibility Sizes goes bigger and affects more apps, including some third-party ones, but also enlarges system menus and settings screens. Use Display & Text Size first, and switch to Larger Accessibility Sizes only if you need text even bigger.
Can I make text larger in Messages or iMessage?
Yes. Open Settings, tap Display & Text Size, and drag the slider to the right. This will enlarge text in Messages along with Mail, Notes, and other built-in apps. If you need it even larger, use Larger Accessibility Sizes instead.