Why is the text on my phone so small?

Phones ship with a middle-of-the-road default font size chosen to fit as much on screen as possible, not to be easy to read. It is a setting, not a limitation of the phone. Moving the text size slider in Settings fixes it in seconds, and the change applies across the phone.

What is the biggest text size Android allows?

Google's accessibility help says you can adjust font size up to 200% — twice the standard size. Android also has a separate Display size slider that enlarges icons and buttons along with the text. Some of these options require Android 13 or newer, and menu names vary by phone maker.

How do I undo a text size change on my iPhone?

Go back to the same place you changed it — Settings > Display & Brightness > Text Size, or Settings > Accessibility > Display & Text Size > Larger Text — and drag the slider back toward the left. The screen updates as you drag, so you can see the result before you leave. Nothing is saved permanently and nothing is lost.

Does changing the text size affect every app?

It affects the phone's own screens and most apps built to follow the system setting, including Mail, Messages and Notes on an iPhone. A smaller number of apps use their own fixed type and will look unchanged. Those apps often have a text size control inside their own settings menu.

Can I make the text bigger without changing the icons?

Yes. On Android, Font size changes only the letters, while the separate Display size setting is what enlarges icons, buttons and layouts. Adjust Font size alone if you want the icons left as they are.

How to Make Text Bigger on a Phone

If you are squinting at your phone, you do not need new glasses or a new phone — you need about thirty seconds in Settings. On an iPhone, the slider lives under Settings > Display & Brightness > Text Size, with a second, bigger set of sizes under Settings > Accessibility > Display & Text Size > Larger Text. On an Android phone, open Settings, search for Font size, and move the slider; Android goes up to 200% of the normal size. Nothing is permanent — if it looks wrong, drag the slider back.

The Detailed Answer

Every modern phone has a text size slider built in. You move it, the type on the screen grows or shrinks as you watch, and you keep the size that feels comfortable. There is no cost, nothing to download, and nothing you can break.

The only real decision is how far to go. Apple warns on its own support page that “making the text too large might make it hard to tap buttons or other functions within apps” — so nudge the slider a step or two, use the phone for a minute, then adjust again.

Phone	Where to go	How large it goes
iPhone	Settings > Display & Brightness > Text Size	Standard range
iPhone (bigger)	Settings > Accessibility > Display & Text Size > Larger Text	Larger font options
Android	Settings > search “Font size”	Up to 200%

On an iPhone or iPad

Apple gives you two paths, and the second one goes further than the first.

Open the Settings app (the grey gear icon).
Tap Display & Brightness.
Select Text Size.
Drag the slider at the bottom of the screen to the right for bigger type, left for smaller. The sample text above the slider changes as you drag.

If that still is not big enough, go back and take the accessibility route instead: Settings > Accessibility > Display & Text Size, tap Larger Text, then drag the slider to select the font size you want. These same steps work on an iPad and an iPod touch.

The change applies across the phone, not just one app. Apple’s built-in apps — Mail, Messages, Settings, Notes — follow it immediately, and most well-made apps from the App Store do too. A few apps use their own fixed type and will not budge.

On an Android phone

Android phones come from many different makers, so rather than hunting through menus, use the search box at the top of Settings.

Open the Settings app.
Tap the search box and type Font size, then select it from the results.
Move the slider left or right until the sample text looks right.

Google’s own accessibility help says you can adjust font size up to 200% — double the normal size. Google also notes that some of these steps work only on Android 13 and up, and phone makers rename and rearrange menus, so the exact wording on your screen may differ a little from the wording here. The search box is your friend: if “Font size” does not appear, try typing “text” or “display”.

Font size versus display size

Android separates two settings that are easy to confuse. Font size changes only the letters. Display size changes everything — text, icons, buttons and app layouts all get larger together, as if you moved closer to the screen.

To adjust it, open Settings, search for and select Display size, then move the slider. Many people get the best result by raising font size first and only then nudging display size up one step. Raising both all the way often pushes buttons off the edge of the screen.

How do I make text bigger on a tablet?

The steps are the same. On an iPad, Apple’s instructions cover iPhone, iPad and iPod touch together: Settings > Display & Brightness > Text Size, or Settings > Accessibility > Display & Text Size > Larger Text. On an Android tablet, open Settings and search for Font size. Because a tablet screen is bigger to begin with, a moderate increase usually reads beautifully — see our Tablets & Computers guides for more on setting one up comfortably.

What if the buttons stop working after I make the text bigger?

Nothing is broken. When type gets very large, buttons and labels can be pushed out of view inside some apps — Apple flags this risk on its own support page. Go back to the same slider and move it down a step or two. If you cannot read the Settings screen well enough to find it, ask a family member to drag it back for you while the phone is in your hands.

Is bigger text a reason to buy a different phone?

Usually not. Almost any phone sold in the last several years can enlarge its text, so a bigger screen — not a different brand — is what tends to help most. If you are shopping anyway, compare screen size, how loud the earpiece gets and whether the phone offers a simplified home screen; our Phones section walks through those trade-offs.

Can someone change the setting for me over the phone?

A family member can absolutely talk you through it, step by step, while you hold your own phone. What you should never do is let a stranger take remote control of your device, or give out a password or a verification code — the Federal Trade Commission warns that fake tech-support callers and pop-ups use exactly that script. Real help never needs your password.

What to Do Next

Give yourself five quiet minutes and work through this in order:

Open Settings and find the text size slider for your phone — Display & Brightness on an iPhone, or search “Font size” on an Android.
Move it up two steps, not all the way. Leave Settings.
Open the app you use most — Messages, Mail, your photos — and read something real for a minute.
Go back and adjust once more. Comfortable is the goal, not maximum.
If text is still hard to read, raise Larger Text on an iPhone, or Display size on an Android, one step at a time.

Two small habits make a difference afterward. Turn the screen brightness up a little in daylight; dim text reads as small text. And if an app ignores your setting entirely, check whether that app has its own text size control in its own settings menu.

If a pop-up ever appears claiming your phone is infected and tells you to call a number, close it and ignore it. The FTC’s advice is simple: do not call, and never give remote access to anyone who contacted you first.

Sources:

Apple Support — Change the font size on your iPhone, iPad, and iPod touch — Source for the iPhone Settings paths (Display & Brightness > Text Size; Accessibility > Display & Text Size > Larger Text) and the warning that very large text can make buttons hard to tap.
Google Android Accessibility Help — Change text & display settings — Source for the Android Font size and Display size steps, the 200% maximum, and the note that some steps require Android 13 and up.
Federal Trade Commission — How to Spot, Avoid, and Report Tech Support Scams — Source for the warning not to call pop-up numbers or grant remote access to unsolicited callers.