Biggest iPhones Ever, Ranked by Size (2026)

If you are shopping for the largest iPhone you can get, or you just want to know how the big models stack up against each other, the short answer is simple. As of 9th September 2026 there are two answers. The iPhone Duo, Apple’s first folding iPhone, opens out to a 7.6-inch display and is far and away the largest screen the company has ever put on a phone. If you mean a normal one-piece iPhone, the record is now shared: the iPhone 18 Pro Max matches the iPhone 17 Pro Max to the millimetre at 163.4 x 78 x 8.75 mm with a 6.9-inch display, so the two are tied for the biggest slab iPhone ever made.

“Biggest” can mean two different things, though: the physical footprint of the phone in your hand, and the size of the screen on the front. They usually track together, but not always, so below we rank the largest iPhones by their physical size, then break them down by screen size, width, and where the small models sit for anyone searching smallest to biggest. The folding iPhone Duo is handled on its own, because it has two sets of dimensions depending on whether it is open or shut. For the complete model-by-model breakdown, our full iPhone size comparison chart lists every iPhone Apple has ever shipped.

The Biggest iPhone Right Now

The iPhone 18 Pro Max takes over at the top of the conventional range, though it does it without growing. Apple reused the iPhone 17 Pro Max body exactly, so the height, width and 8.75 mm depth are all unchanged and the screen is still 6.9 inches. The one difference you will feel is weight: 249 g against 233 g, which makes the 18 Pro Max the heaviest non-folding iPhone Apple has ever sold, past the 240 g iPhone 14 Pro Max. It goes on sale on 18th September 2026, with the iPhone 17 Pro Max and 16 Pro Max both worth a look if you want the same footprint for less.

If it is sheer screen area you are after, wait for the iPhone Duo on 23rd October 2026. Unfolded it gives you 7.6 inches, a full 0.7 inches more than any Pro Max, and there is a 5.4-inch cover screen on the outside for when it is shut.

The Biggest iPhones Ever, Ranked by Size

Here are the 16 largest one-piece iPhones of all time, ranked by physical footprint (height first, then width). Screen size is listed alongside, because a few older models have big bodies but modest displays thanks to their thick bezels.

A few things jump out. The top three spots belong to the only three 6.9-inch iPhones ever made, and the first two are not really a ranking at all: the iPhone 18 Pro Max and 17 Pro Max share one identical body, so anything that fits one fits the other. Positions 6, 7, and 8 are a three-way tie of their own, with the iPhone 12 Pro Max, 13 Pro Max, and 14 Plus sharing a 160.8 x 78.1 mm footprint and differing only in thickness. And notice how high the old iPhone 8 Plus and 7 Plus rank despite their small 5.5-inch screens, a reminder of just how much room those chunky top and bottom bezels used to take up.

Where the Folding iPhone Duo Fits

The iPhone Duo will not sit in that table, because it does not have one size. Apple measures it twice, and the two figures describe very different objects:

Shut, it is a short, wide, thick phone that no Pro Max would be mistaken for. Open, it spans 164.6 mm across and thins out to 5.2 mm, which is less than the 5.6 mm iPhone 17 Air. So depending on how you hold it, the Duo is either the chunkiest iPhone Apple sells or the thinnest one it has ever built. At 254 g it is the heaviest either way.

Ranked by Screen Size

If it is purely the display you care about, the picture is cleaner. Apple has used four large screen sizes across its biggest phones:

• 7.6 inches (the biggest ever): iPhone Duo, unfolded
• 6.9 inches (the biggest on a one-piece iPhone): iPhone 18 Pro Max, iPhone 17 Pro Max, iPhone 16 Pro Max
• 6.7 inches: iPhone 15 and 16 Plus, iPhone 14 Plus, and the 12, 13, 14, and 15 Pro Max
• 6.5 inches: iPhone 11 Pro Max, iPhone XS Max, iPhone 17 Air
• 5.5 inches (the old Plus era): iPhone 6 Plus, 6s Plus, 7 Plus, 8 Plus

The jump from 6.7 to 6.9 inches with the iPhone 16 Pro Max in 2024 was the first time Apple pushed past the 6.7-inch ceiling it had held since the iPhone 12 Pro Max in 2020. The iPhone Duo in 2026 is a much bigger break, adding another 0.7 inches in one go, and it only manages it by folding in half.

The Widest iPhone Ever

Height grabs the headlines, but width is what actually decides whether a phone is comfortable to hold and reach across one-handed. The widest iPhone ever measures 78.1 mm, a figure shared by an unlikely group: the iPhone 8 Plus, iPhone 12 Pro Max, iPhone 13 Pro Max, and iPhone 14 Plus. Interestingly, the newer 6.9-inch models, the iPhone 16, 17 and 18 Pro Max, are actually a touch narrower at 77.6 to 78 mm, because Apple has trimmed the bezels to fit a larger screen into a similar frame.

The iPhone Duo sits outside that comparison entirely. Folded it is 84.1 mm across, wider than any iPhone before it, and opened out it measures 164.6 mm, roughly the width of two Pro Max phones side by side.

And the Thinnest of the Big iPhones

One 2025 model breaks the usual rule that big means bulky. The iPhone 17 Air pairs a large 6.5-inch screen with a body just 5.6 mm thick, and it is still the thinnest one-piece iPhone Apple has built. It sits near the bottom of our size ranking on height alone, yet in the hand it feels nothing like the heavier Plus and Pro Max models above it. Proof that the biggest screen and the biggest phone are not always the same thing.

The iPhone Duo undercuts it at 5.2 mm, but only while it is open. Fold it shut and you are holding 11.3 mm, thicker than any iPhone since the 12.3 mm iPhone 3GS, so the Air keeps the everyday title.

iPhones From Smallest to Biggest

Flip the ranking around and the range Apple covers is enormous. The smallest iPhones ever are the original iPhone and iPhone 4 and 4s, all around 115 mm tall with 3.5-inch screens. In the modern era, the iPhone 12 mini and 13 mini are the most compact at 131.5 mm, while the iPhone SE (2022) is the smallest recent model with a home button, at 138.4 mm. From there sizes climb through the 6.1-inch mainstream models up to the 6.9-inch iPhone 18 Pro Max at the top of the one-piece range, and past it to the 7.6-inch iPhone Duo. You can see every model laid out in order in our complete iPhone size comparison chart, and trace how phones grew over time in our history of the mobile phone.

How We Ranked iPhone Size

“Size” has no single official measure, so we ranked the phones by physical footprint, using height as the primary sort and width as the tie-breaker, since those two numbers decide how big a phone feels and whether it fits your hand or pocket. We list screen size separately because it does not always match the body: a heavily bezelled older phone can have a larger footprint than a newer one with a bigger screen. All dimensions are Apple’s official figures in millimetres, measured as height x width x depth. The folding iPhone Duo is kept out of the main ranking and given its own table, since sorting a phone that changes shape by a single height figure would tell you nothing useful.

Frequently Asked Questions

What is the biggest iPhone ever made?

The iPhone Duo has the biggest display of any iPhone, at 7.6 inches unfolded. Among one-piece iPhones the biggest are the iPhone 18 Pro Max and iPhone 17 Pro Max, which share an identical 163.4 x 78 x 8.75 mm body and a 6.9-inch display, with the iPhone 16 Pro Max just behind at 163 mm tall.

What is the biggest iPhone screen?

The largest iPhone screen is the 7.6-inch inner display on the folding iPhone Duo. On a normal iPhone it is 6.9 inches, found on the iPhone 18, 17 and 16 Pro Max. Before those, the biggest was 6.7 inches, used across the Plus and Pro Max models from the iPhone 12 Pro Max onward.

What is the widest iPhone?

The widest one-piece iPhone is 78.1 mm across, a width shared by the iPhone 8 Plus, iPhone 12 Pro Max, iPhone 13 Pro Max, and iPhone 14 Plus. The folding iPhone Duo beats them all at 84.1 mm folded and 164.6 mm open.

Which is bigger, the Plus or the Pro Max?

It depends on the year. In the 6.7-inch era the Plus and Pro Max were almost identical in footprint. Since 2024, though, the Pro Max moved to a larger 6.9-inch screen, so the iPhone 16, 17 and 18 Pro Max are all bigger than any Plus model Apple has made.

Is the iPhone Duo bigger than the iPhone 18 Pro Max?

By screen, yes, and by a wide margin: 7.6 inches against 6.9. By pocket size it is more complicated. Folded, the Duo is shorter than a Pro Max at 117.8 mm but much thicker at 11.3 mm, so it takes up a different kind of space rather than simply more of it.