How to increase font size on iPhone and iPad (iOS 15 updated)

How to increase font size on iPhone

If you have difficulty seeing small fonts, iPhone lets you easily increase the overall font size. In iOS 15, you can even change the font size just for individual apps like email, messages, Home screen, WhatsApp, etc. Once you enlarge the font on your iPhone, it becomes easier to use your device. So let us get straight in and see how to do that.

How to make font size larger on iPhone using Display & Brightness

  1. Open Settings and tap Display & Brightness.
  2. Tap Text Size.
  3. Drag the slider to the right to increase the text size.
  4. Apps that support Dynamic Type will change the text according to what you set in step 3.
    All Apple apps and most third-party apps support this.

    How to make font size larger on iPhone using Display and Brightness

Adjust the text size on iPhone with Accessibility settings

If you want to make the text even larger and easier to read, you can use Accessibility settings. However, please keep in mind that it may cause problems with the navigation buttons when you increase the text substantially.

  1. Open Settings and tap Accessibility.
  2. Tap Display & Text Size.
  3. Tap Larger Text.
  4. Toggle on Larger Accessibility Sizes.
  5. Now, drag the slider to the right to increase the text size.

    Adjust text size on iPhone with Accessibility settings

How to make the iPhone fonts bold

If making the text size is not enough, you can make the font bold to make it appear easy on the eyes.

  1. Open Settings and tap Display & Brightness.
  2. Enable Bold Text.

    How to make iPhone fonts bold

Tip: Tap View and choose Zoomed. It will further help.

iOS 15 has added a handy option that lets you set the text size for desired apps.

How to change the font size of individual apps in iOS 15

  1. Open iPhone Settings and tap Control Center.
  2. Tap the green plus icon next to Text Size to add it to the Control Center.

    Add Text Size icon to iPhone Control Center in iOS 15
  3. Now, open the app whose text size you want to change.
  4. While you are in the app, bring the Control Center.
    • On iPhone with Face ID, swipe down from the top right of the screen where the battery icon is.
    • On iPhone with a Home button, swipe up from the screen’s bottom.
  5. Long-press AA.
  6. Tap App Name Only.
  7. Drag the text size slider up or down to change the text size only for this app. The rest of the iPhone will have the same text size (you can change it by tapping All Apps).

    Open app bring Control Center tap AA tap app name and drag the text size slider up

This is how you can increase the font size for all apps or certain apps on iPhone and iPad. The process to revert this change is the same as well. Hope it was helpful. If you need further assistance, please ask via the comments section below.

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Author Profile

I have been an Apple user for over seven years now. At iGeeksBlog, I love creating how-tos and troubleshooting guides that help people do more with their iPhone, iPad, Mac, AirPods, and Apple Watch. In my free time, I like to watch stand up comedy videos, tech documentaries, news debates, and political speeches.


  1. Font size will not change within apps like eBay, Google Maps, the Telegraph and many more that not support these feature.
    Just bear in mind before you switch to iPhone,i did that and was not able to properly read without strain as letters where very small.
    I contacted apple support and they confirmed that this is app developers issue.
    For me that was a deal breaker and i returned to android and send the iPhone 11 back.

  2. I think you decided in haste, especially if just font size was the issue. For one, the font size is system-wide, and most apps follow it. I specially tested Google Maps and observed the fonts changing. In fact, with iOS 15, you can increase fonts for particular apps; if you need to test it, the steps are in the blog itself.

  3. Unfortunately, you can’t change the font size, color, or font of an email signature in the iOS Mail app. You can do this in the Mail app Preferences on Mac but not on iPhone or iPad. Even if you copy and paste a formatted text from elsewhere into the Mail signature settings, most of the rich text formatting will be automatically removed. So, you cannot increase the font size of your signature in the iOS Mail app.

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