To change the text size in the Twitter iPhone app (now called X), tap your profile picture, choose Settings and privacy, open Accessibility, display, and languages, tap Display and sound, then drag the font size slider. Slide it left for smaller text or right for bigger text.
The slider only changes text inside X, so it’s a good fix if posts feel too small (or too large) but the rest of your iPhone looks fine. If you need text even bigger than the slider allows, your iPhone’s own text size settings can help too.
X’s accessibility features page lists font size customization as a setting in the iOS, Android, and web versions of X. The iPhone options come from Apple’s iPhone User Guide. X renames menus from time to time, so your labels may differ slightly. The original version of this article used the older Twitter path (Settings & privacy > Display and sound), which is no longer accurate.
How to Change Text Size in the X (Twitter) iPhone App
- Open the X app.
- Tap your profile picture in the top-left corner of the screen.
- Tap Settings and privacy. You may need to scroll down to see it.
- Tap Accessibility, display, and languages.
- Tap Display and sound.
- Drag the font size slider left to make text smaller, or right to make it bigger.
Result: Text in the app gets smaller or bigger to match. The change applies right away across posts, menus, and timelines, with no app restart needed. The iOS app has four font size positions.
Other Ways to Make X Text Bigger on an iPhone
If the largest X setting still isn’t big enough, try these iPhone options from Apple’s guide:
- Per-App Settings: Go to Settings > Accessibility > Per-App Settings, tap Add App, choose X, then tap X to change its text size, color, and motion settings. This affects X only. (Apple)
- Control Center Text Size: Apple says you can change text size while you’re in an app by opening Control Center and adjusting the Text Size slider. If it isn’t there, add the Text Size control. (Apple)
- System text size: In current iOS, go to Settings > Appearance > Text Size. For even larger sizes, go to Settings > Accessibility > Display & Text Size > Larger Text and turn on Larger Accessibility Sizes. Apple says this applies to supported apps, so how much X changes may vary. (Apple)
- Display Zoom: Settings > Appearance > Display Zoom > Larger Text makes text, icons, and buttons bigger across the whole phone.
X also lists high contrast mode and Dark and Dim modes among its iOS settings, which can make posts easier to read. See our guide on Twitter’s night mode for that one.
Frequently Asked Questions
Does the X font size setting change text in other apps?
No. The slider is inside X’s own settings, so it only changes text in the X app. This lets you adjust X without changing how text looks across your whole phone. To change text everywhere, use your iPhone’s Text Size setting instead.
Can I change the text size on the X website too?
Yes. X’s accessibility page lists font size customization for the web version as well as the iOS and Android apps. On the web, look for the font size option in X’s display settings; exact menu names can change. Your browser’s zoom also makes the whole page bigger.
Related Guides
- How to Enable Night Mode in the Twitter iPhone App
- How to Turn Off Video Autoplay in the iPhone Twitter App
- How to Mute Someone in the Twitter iPhone App
- How to Share on Twitter from the iPhone Safari App
Matthew Burleigh is the founder, head writer, and editor of Solve Your Tech, which he launched in 2012. He has written technology tutorials since 2008 and worked in IT since 2003, including small-business support, IT management, and consulting. He holds Bachelor’s and Master’s degrees in Computer Science from Arizona State University.
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