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The iPhone screen has grown from 3.5 inches on the original model to 6.9 inches on the largest Pro Max. Current iPhones fall into a few clear groups: compact-ish at 6.1 to 6.3 inches, mid-large at 6.5 to 6.7 inches, and the biggest at 6.9 inches. The older mini models, at 5.42 inches, are the smallest you can still buy used or refurbished. This guide lists the sizes by model, explains what the number really measures, and helps you choose a size you will still like in a year.

TL;DR

• iPhone screen size is the display diagonal in inches. It is not the phone’s height or width, and rounded corners make the visible area a little smaller than the number suggests.
• Sizes run from 3.5 inches (the original iPhone) to 6.9 inches (the Pro Max line). The 12 mini and 13 mini sit at 5.42 inches, and the iPhone 15 and 16 at 6.1 inches.
• The 2025 lineup brought a 6.3-inch iPhone 17, a 6.5-inch iPhone Air and a 6.9-inch iPhone 17 Pro Max.
• For one-handed use, compare width and weight. For pocketability, compare height, thickness and weight.
• A refurbished or open-box iPhone gets you a larger or newer screen for less. Check the condition grade and warranty before you buy.

Table of Contents

• What an iPhone screen size actually measures
• iPhone models by screen size
• What is in the current U.S. lineup
• How screen size has changed across generations
• Screen size is not body size
• How to choose the right size for you
• Perspective: what we see when people choose a size
• Get a bigger or newer screen for less
• Reading screen size listings without getting misled
• FAQ
• Sources

What an iPhone screen size actually measures

When Apple or a store says “6.1-inch,” it means the display measured on the diagonal, from one corner to the opposite corner. The diagonal convention dates back to CRT televisions, where it gave marketers one simple number.

That number is not the size of the phone. Physical dimensions are the height, width and depth of the body, measured in millimeters. Rounded display corners also mean the viewable area is smaller than a perfect rectangle of that diagonal would be.

There are three practical consequences:

1. Two phones with the same screen size can have different bodies. Bezel width, corner design and frame all change the footprint.
2. A bigger screen number does not always mean a much bigger phone. Thinner bezels pack more display into similar hardware.
3. Screen size tells you nothing about sharpness. Resolution and pixel density are separate specs. Modern Pro models, for example, are listed at 460 pixels per inch.

iPhone models by screen size

Here is the lineup grouped by size, from the smallest to the largest. Sizes are the manufacturer’s rounded diagonal figures.

The sources behind the table: the 3.5-inch original, the 5.42-inch minis, and the 6.1-inch iPhone 15 and 16 come from the same display reference, which also lists the 6.3-inch and 6.9-inch iPhone 18 Pro and 18 Pro Max. The 6.1-inch 16e and 6.7-inch 16 Plus are confirmed in a side-by-side spec comparison. For the 17 generation, the iPhone 17 and 17 Pro share a 6.3-inch display, the Air has 6.5 inches, and the 17 Pro Max keeps 6.9 inches.

If you need an exact spec for an older model not listed here, Apple’s own tech specs page for that phone is the final word.

What is in the current U.S. lineup

The newest generation spreads across four sizes. There is no Plus this time around: the iPhone 17 took on the Pro’s 6.3-inch display and the Air filled the gap at 6.5 inches. That leaves these choices:

• 6.3 inches (iPhone 17 and 17 Pro): the sweet spot for most people. Big enough for video and reading, small enough for one hand in most cases.
• 6.5 inches (iPhone Air): a step up in screen without going all the way to Max territory.
• 6.9 inches (17 Pro Max): the largest iPhone screen, best for media, maps, split-screen use and anyone with larger hands.

The iPhone 17’s 6.3-inch display is bigger than the iPhone 16’s 6.1 inches, and the phone itself is a little taller, thicker and heavier. Part of the extra screen came from reduced bezels, not just a bigger body.

How screen size has changed across generations

The long trend is up. Screens grew from 3.5 inches on the original iPhone to the 6.9-inch Pro Max class today, with some generations holding the same size for several years. The 12 mini and 13 mini were a deliberate counter-move: compact phones for people who did not want a big slab.

For shoppers, this history matters in two ways. First, a phone a few generations old often has a smaller screen than you expect. A 6.1-inch iPhone 15 or 16 is a modern, comfortable size, but it is smaller than a Pro Max. Second, older minis are a good fit if you truly want a small phone, because Apple’s newest lineup no longer has one at that size.

Screen size is not body size

This is where many buyers go wrong. Compare these two:

• The iPhone 15 and 16 share identical body dimensions of 147.6 x 71.6 x 7.80 mm, even though their hardware differs.
• The iPhone 16e has the same 6.1-inch screen size as those two, but its body measures 146.7 x 71.5 x 7.8 mm.

So “6.1 inches” describes a screen, not a single phone shape. Shoppers should compare height, width and weight rather than only the diagonal when judging one-handed use or pocketability.

Accessories need the exact model

Because corner radii and camera cutouts differ, a screen protector cannot be picked by inches alone. Buy cases and protectors for the exact model name, not for “6.1-inch iPhones.” Camera housings and button positions are what decide whether it fits.

How to choose the right size for you

Start with how you hold the phone, not with the spec sheet.

1. One-handed use: look at width and weight first. A narrower, lighter phone is easier to reach across.
2. Pocket or bag: look at height, thickness and weight. These decide how a phone sits in jeans or a jacket.
3. Media and gaming: the 6.9-inch class gives the most room. If you watch a lot of video or play games, you will notice it.
4. Reading and work: the 6.3 to 6.5-inch range balances text size with portability.
5. Accessibility: if small text is a problem, a larger display helps, but you can also raise text size in Settings on any model.

If you can, hold the phone before you buy. Put a store model or a friend’s phone in your hand for a few minutes. If you are ordering online, check the dimensions in the listing against a phone you already own.

A quick decision guide

Perspective: what we see when people choose a size

We are an independent Apple-only retailer in Hollywood, and we bench-test and grade every device before it is listed. In that work, size questions come up constantly, and the same pattern repeats: people pick a screen number, then discover the phone’s shape matters more.

Our advice is simple. Decide on width and weight first, since that is what you feel every day. Then choose the screen size within that. A Pro Max is wonderful if you want the display, but a 6.1 or 6.3-inch phone is the better daily companion for many people.

We also think refurbished is the smartest way to move up a size. The money you save on a certified, tested phone can cover the jump from a standard model to a Pro Max, and every listing shows clear specs and condition details so you know what you are getting. If you are nearby, you can pick up at our Hollywood store and hold the device first.

— Pro-

Get a bigger or newer screen for less

If the size you want is above your budget new, a refurbished or open-box iPhone is a practical route. Each device we sell is bench-tested, graded for cosmetic condition and covered by our one-year MacPro-LA warranty. Shipping is free in two days, returns are accepted within 30 days, and local pickup is available at our Hollywood showroom.

If you want the largest display, see the iPhone 18 Pro Max in 256GB black or the iPhone 17 Pro Max in 256GB silver. For a Pro model in a more manageable body, there is the iPhone 16 Pro in 256GB black titanium. You can browse everything on our iPhone page.

We also offer protection plans for added peace of mind. See the MacPro-LA Care+ Protection Plan, listed at 19 USD per month, or the 1 Year Protection plan at 199 USD per year.

Reading screen size listings without getting misled

A few habits will save you from a bad buy.

• Check the model name, not just the inches. “6.1-inch iPhone” matches several different phones.
• Compare millimeters. Put the height and width of the listing next to your current phone or case.
• Ignore “screen-to-body” bragging. It is a ratio, not a guarantee of comfort.
• Match storage and carrier status separately. Size tells you nothing about unlocked status or capacity, so read the full listing.
• Look at condition grading. A refurbished phone with a clear grade and warranty lets you pick the size you want without paying new-phone prices.

FAQ

What is the smallest iPhone screen size?

The original iPhone has the smallest screen, at 3.5 inches. Among phones that still run modern software and are easy to find used or refurbished, the 12 mini and 13 mini at 5.42 inches are the smallest.

What is the largest iPhone screen size?

The Pro Max line tops out at 6.9 inches, including the iPhone 17 Pro Max and the 18 Pro Max. Only a foldable concept would go beyond that, and it is a different category from the standard iPhone range.

Do iPhones with the same screen size have the same dimensions?

Not always. Bezel width, corner design and frame all change the body. The iPhone 15 and 16 do share identical dimensions, but that is not a rule across all models. Always check millimeters before buying a case.

Is the screen size the same as the viewable area?

No. The diagonal is measured as if the display were a rectangle, but rounded corners remove a little of the viewable area. The difference is small, but it is why two phones with similar numbers can feel different.

Which iPhone size is best for one-handed use?

Look at width and weight, not just the diagonal. In general, the 6.1 to 6.3-inch models are easiest to manage with one hand, and the 6.9-inch Pro Max models are the hardest. If you want the most compact option, the minis are the smallest.

Sources

• iOS Resolution: display properties of every iPhone
• Use Your Loaf: iPhone 17 screen sizes
• MacRumors: iPhone 17 roundup
• Screen Size Comparison: every Apple iPhone
• Bayelon: iPhone dimensions in mm and case-fit guide
• App of Web: guide to iPhone screen resolutions and sizes
• TheSize.net: phone screen sizes
• DHgate Tech: iPhone dimensions by model
• PhoneArena: iPhone 16e vs iPhone 16 Plus

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