Where to find font settings on your iPhone

iPhone gives you control over text appearance in two main places: system-wide settings that affect most apps, and individual app settings for specific programs. The system settings change how text looks in Mail, Messages, Notes, and many third-party apps. App-specific settings let you customize fonts within that app alone — useful if you want larger text in one program but not others.

To adjust system-wide text size, open Settings, then tap Display & Brightness. You'll see a slider labeled Text Size. Drag it left to make text smaller or right to make it larger. This change applies when ready to most built-in apps and many third-party ones. If you need even larger text, go back to Settings, tap Accessibility, then Display & Text Size, and turn on Larger Accessibility Sizes. This unlocks additional size options beyond the standard range.

For font style changes — switching from the default San Francisco font to something else — your options depend on which app you're using. Apple's built-in apps like Mail and Notes don't let you change the actual typeface through settings. Instead, you change fonts within the app itself while composing or editing text, using the formatting menu that appears when you select text.

Key Takeaways

  • Text size adjusts system-wide through Settings > Display & Brightness > Text Size, and this change affects Mail, Messages, Notes, and most other apps.
  • Larger Accessibility Sizes in Settings > Accessibility > Display & Text Size provides even bigger text options for apps that support them.
  • Font style (typeface) changes happen inside individual apps while you're composing or editing, not through system settings.
  • Third-party apps like Google Docs, Microsoft Word, and Adobe Express offer their own font menus with dozens of typeface options.
  • Bold, italic, and underline formatting work the same way across apps: select text, tap the formatting menu, and choose your style.

Changing font style in Apple's built-in apps

When you're composing an email in Mail or writing in Notes, select the text you want to format. A menu appears with options including B (bold), I (italic), U (underline), and AA (text formatting). Tap AA to see additional options like strikethrough or a color picker. However, Apple's built-in apps don't include a typeface menu — you're limited to bold, italic, underline, and color changes.

If you need actual font variety in Apple apps, your best option is to compose in a third-party app that offers fonts, then copy and paste the text into Mail or Notes. Apps like Google Docs let you choose from dozens of fonts, and the formatting carries over when you paste. This workaround takes an extra step but gives you access to fonts that Apple's apps don't natively support.

Using fonts in third-party writing and document apps

Google Docs, Microsoft Word, and Pages all include font menus on iPhone. In Google Docs, start composing or select existing text, then tap the three-line menu icon at the top. Tap Format, then Text, and you'll see a list of available fonts. Scroll through options like Roboto, Lora, Courier Prime, and others. Select one and it applies to your selection when ready.

Microsoft Word works similarly: select text, tap the Home tab at the bottom, then tap the font dropdown (it shows the current font name). Scroll through the list and tap your choice. Pages, Apple's own document app, has a formatting panel on the right side of the screen. Tap the paintbrush icon, then tap Text, and you'll see font options. All three apps let you change font size, color, and style in the same menu.

Adobe Express, Canva, and other design apps often include even more fonts — sometimes 100 or more. These apps are better for creating graphics or posters where font choice matters visually. For everyday writing, Google Docs and Word offer a good balance of font variety and simplicity.

Making text bold, italic, or underlined

The quickest way to explore bold, italic, or underline is to select the text first. Double-tap a word to select it, or tap and drag to select multiple words. Once text is highlighted in blue, a menu appears above it. Look for the formatting options — usually shown as B, I, and U icons. Tap whichever style you want. You can combine them: select text, tap B for bold, then tap I to make it bold and italic.

In some apps like Notes and Mail, you may need to tap the AA icon or a menu button to see all formatting options. If the formatting menu doesn't appear, try tapping the selected text again or look for a formatting button in the app's toolbar. Different apps arrange these controls differently, but the concept is the same: select, then tap the style you want.

To remove formatting, select the text again and tap the same button. Tapping B again removes bold. This works across all Apple apps and most third-party ones.

Adjusting font size for readability

If you find yourself constantly squinting at your iPhone screen, the Text Size slider in Settings is the fastest fix. Go to Settings > Display & Brightness and drag the slider to the right. The preview text above the slider shows you how large the text will become. Most people find the middle to slightly-right position comfortable for everyday use.

If standard sizes aren't large enough, enable Larger Accessibility Sizes. Go to Settings > Accessibility > Display & Text Size and toggle on Larger Accessibility Sizes. This unlocks additional size steps beyond the normal range. Some apps, particularly Apple's built-in ones, respond to this setting. Third-party apps may or may not support it — it depends on how the developer built the app.

You can also adjust text size within individual apps. In Mail, open an email and pinch outward on the text to zoom in, or pinch inward to zoom out. This zoom applies only to that email and resets when you open a different one. In Notes, you can select text and use the text size menu to make individual paragraphs larger without changing the whole document.

Using color and highlighting with text

Select text in Mail or Notes, then tap the AA formatting button. You'll see a color picker that lets you change text color or add a highlight behind the text. Tap the color circle to choose a new text color, or tap the highlighter icon (usually shown as a marker) to add a colored background. This works well for emphasis or organizing information within a document.

Google Docs and Word also include text color and highlighting options. In Google Docs, select text, tap Format, then Text Color or Highlight Color. In Word, select text, tap Home, then look for the text color or highlighting button. These options are useful when you're sharing documents and want certain information to stand out.

Fonts in Messages and other communication apps

Messages doesn't have a font menu, but you can use bold, italic, and underline formatting. Select text in a message draft, and the formatting menu appears. Tap B, I, or U to explore the style before you send. The recipient will see the formatted text if they're using an iPhone or iPad. On Android devices, the formatting may not display the same way.

Third-party messaging apps like Telegram and Discord include their own formatting options. In Telegram, you can select text and tap the formatting button to explore bold, italic, monospace, or strikethrough. These apps are designed for text formatting, so they offer more control than Messages does.

Frequently Asked Questions

Can I install new fonts on my iPhone?

Not directly through iOS settings. Apple doesn't allow you to add custom fonts system-wide. However, apps like Adobe Express, Canva, and Procreate include their own font libraries. If you need a specific font for a document, use Google Docs or Word, which have extensive font collections built in.

Why doesn't my font change show up when I text someone?

Messages supports bold, italic, and underline, but the recipient must be using an iPhone or iPad to see the formatting. Android users may see plain text instead. If you're using a third-party messaging app, check that the other person has the same app installed.

Does changing text size in Settings affect all apps?

Most built-in Apple apps and many third-party apps respond to the Text Size setting. Some apps, particularly games and older programs, may ignore it. If an app doesn't respect your text size preference, check that app's own settings — it may have its own text size control.

How do I make text larger in Safari when reading web pages?

Open a webpage in Safari, tap the AA icon in the address bar at the top, then tap Larger or Smaller. You can also pinch outward on the page to zoom in. This zoom setting applies only to that webpage and resets when you navigate away.

Can I use different fonts in different parts of the same document?

Yes, in Google Docs, Word, and Pages. Select the text you want to change, then choose a new font from the font menu. Only that selection changes. You can mix fonts throughout a document, though most writing benefits from using one or two fonts consistently.