How to Make Text Bigger on iPhone — Step-by-Step Guide
To make text bigger on iPhone, go to Settings → Display & Brightness → Text Size and drag the slider to the right. For even larger text, go to Settings → Accessibility → Display & Text Size → Larger Accessibility Sizes and turn it on, then use the extended slider.
What You Need
- Any iPhone from iPhone 8 onwards running iOS 15 or later
- No downloads or apps required — this uses built-in iPhone settings
Step-by-Step Instructions
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1
Open Settings
Find the Settings app on your home screen — it looks like a grey square with two silver gears on it. Tap it to open. Settings is usually on your first home screen, but if you cannot find it, swipe down from the middle of your home screen and type "Settings" in the search bar.
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2
Tap Display & Brightness
Scroll down slightly from the top of Settings. You will see Display & Brightness in the list — it has an icon that looks like two letter A's, one small and one large. Tap it.
Tip: You do not need to scroll very far — Display & Brightness is usually in the first group of options, just below your name and Airplane Mode.
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3
Tap Text Size
Scroll down a little and tap Text Size. A new screen opens showing sample text at the top and a slider at the bottom with a small A on the left and a large A on the right.
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4
Drag the slider to the right
Press your finger on the circle in the middle of the slider and slide it toward the right. As you drag, the sample text at the top of the screen updates in real time so you can see exactly how large the text will appear. When you are happy with the size, lift your finger — the setting is saved automatically.
Tip: There is no Save button — the setting takes effect as soon as you move the slider. You can always go back and adjust it if you want it larger or smaller.
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5
Tap the back arrow to return to Settings
Tap the left-pointing arrow in the top-left corner of the screen to go back. Your new text size is now active across most apps on your iPhone. Open your Messages app or Mail to see the change in action.
If the standard slider does not go large enough, unlock a second, bigger slider through Accessibility:
- Go to Settings → Accessibility
- Tap Display & Text Size
- Tap Larger Text
- Turn on the toggle next to Larger Accessibility Sizes
- Drag the new slider — it goes significantly larger than the standard one
While you are in this menu, you can also turn on Bold Text — this makes all text heavier and darker, which many people find easier to read even without increasing the size.
If It's Not Working — Common Fixes
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The text changed in Settings but not in my apps
Not all apps use iPhone's text size setting. Apps like Facebook and Instagram have their own text size controls inside their own settings. Open the app, look for a Settings or Profile menu, and search for Font Size or Text Size within that app's own options.
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I made the text too big and now the menus are cut off
Go to Settings → Display & Brightness → Text Size and drag the slider left to reduce it. If the screen looks cut off, try turning your iPhone sideways — landscape mode often makes it easier to navigate when text is very large. You can also ask Siri: "Open text size settings."
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I cannot find the Text Size option in Display & Brightness
Scroll down past the brightness slider and the True Tone and Night Shift options. Text Size appears below those. If your iPhone is running a very old version of iOS, the option may be in Settings → General → Accessibility → Larger Text instead.
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The slider is already at the maximum but the text is still too small
You have reached the limit of the standard slider. Follow the bonus steps above to enable Larger Accessibility Sizes, which unlocks an extended slider that goes significantly larger. If even that is not enough, consider Display Zoom: go to Settings → Display & Brightness → Display Zoom and choose Larger Text.
Recommended for iPhone Users
Common Questions About iPhone Text Size
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Will making text bigger on iPhone affect all my apps?
Most Apple apps — Messages, Mail, Safari, Calendar, Notes — and many third-party apps will reflect the change. However, some apps including Facebook, Instagram, and certain bank apps manage their own text size. For those, look for a Font Size or Accessibility setting inside the app itself.
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How do I change text size without going into Settings every time?
Add a Text Size control to your Control Center. Go to Settings → Control Center, tap the green plus button next to Text Size, then swipe down from the top-right corner of your screen. The Text Size button will be right there — no need to open Settings.
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Does changing text size affect my photos and videos?
No. The text size setting only affects written words — labels, menus, messages, and descriptions. Photos, videos, and images display at the same size regardless of your text size setting.
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What is the difference between Text Size and Display Zoom?
Text Size changes only the size of letters and numbers. Display Zoom (found in Settings → Display & Brightness → Display Zoom) makes everything on the screen larger — icons, buttons, images, and text — but shows less content at once. Many people use both together for the best result.
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My screen is still hard to read even with large text. What else can I try?
Go to Settings → Accessibility → Display & Text Size and turn on Increase Contrast and Reduce Transparency. Increase Contrast darkens text against its background. Reduce Transparency makes blurry menu backgrounds solid. Both make a noticeable difference in readability without changing text size.
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Can I set different text sizes for different apps?
Not through the built-in iPhone setting — it applies one size across all apps. However, apps that have their own internal text size controls (like some news apps and e-readers) can be set independently. Check inside each app's settings for a Font Size or Accessibility option.