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iPhone size comparison: which iPhone size is right for you?

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Written by  Jessica Bown
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Reviewed by  Alan Cairns
5 min read
Updated: 08 Oct 2026

Apple iPhones come in a variety of physical and screen sizes, ranging from a large phone with a massive high-resolution screen to a smaller model that fits in your pocket. Here, we compare the different models available, so you can work out which one is right for you.

iPhone size comparison chart

Model

Dimensions

Screen size

iPhone Duo

117.8 x 84.1 x 11.3mm*

7.6/5.4 inches

iPhone 18 Pro Max

163.4 x 78.0 x 8.75mm

6.9 inches

iPhone 18 Pro

150.0 x 71.9 x 8.75mm

6.3 inches

iPhone Air

156.2 x 74.7 x 5.64mm

6.5 inches

iPhone 17 Pro Max

163.4 x 78.0 x 8.75mm

6.9 inches

iPhone 17 Pro

150.0 x 71.9 x 8.75mm

6.3 inches

iPhone 17e

146.7 x 71.5 x 7.8mm

6.1 inches

iPhone 16 Pro Max

163.0 x 77.6 x 8.25mm

6.9 inches

iPhone 16 Pro

149.6 x 71.5 x 8.25mm

6.3 inches

iPhone 16 Plus

160.9 x 77.8 x 7.8mm

6.7 inches

iPhone 16

147.6 x 71.6 x 7.8mm

6.1 inches

iPhone 16e

146.7 x 71.5 x 7.8mm

6.1 inches

iPhone 15 Pro Max

159.9 x 76.7 x 8.25mm

6.7 inches

iPhone 15 Pro

146.6 x 70.6 x 8.25mm

6.1 inches

iPhone 15 Plus

160.9 x 77.8 x 7.8mm

6.7 inches

iPhone 15

146.7 x 71.6 x 7.8mm

6.1 inches

*Closed, open it measures 117.8 x 164.6 x 5.2mm.

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What is the biggest iPhone?

The foldable Apple iPhone Duo has the biggest ever iPhone screen; its inner display measures 7.6 inches. Even when folded, the outer display is 5.4 inches, while the phone itself comes in at 117.8 x 84.1 x 11.3 mm and weighs a hefty 254g.

Among traditional slab iPhones, meanwhile, the iPhone 18 Pro Max, 17 Pro Max, and 16 Pro Max all boast a 6.9-inch screen.

As the Max in the name suggests, the iPhone 17 Pro Max and iPhone 18 Pro Max are also the largest in overall size (163.4 x 78.0 x 8.75 mm), with the 18 Pro Max weighing slightly more at 249g.

What is the smallest iPhone?

The recent iPhone range only includes large handsets; even the smallest models have a 6.1-inch screen.

The smallest iPhone in Apple’s current lineup is the iPhone 17e, measuring 146.7 x 71.5 x 7.8 mm.

It has a 6.1-inch OLED display, as does the iPhone 16e, which has the same dimensions and can still be found new on the retail market (often for a lower price than the 17e).

If you are happy to buy a refurbished iPhone, meanwhile, it’s worth considering the 13 Mini at 131.5 x 64.2 x 7.65 mm with a 5.4-inch screen.

Small phone fans on a budget can also seek out the discontinued iPhone SE (2022), which is still available refurbished and has a 4.7-inch screen and measures 138.4 x 67.3 x 7.3 mm.

Just remember that older models will not offer the same hi-tech features as the latest iPhones.

Which iPhone size should I choose?

What type of iPhone is right for you? We’ve listed the benefits of the different size models to help you decide.

Smaller phones (e.g., iPhone 17e)

  • Can be used one handed

  • Fit in pockets and bags

  • Easier to use if you have smaller hands

  • Often cheaper than the plus-sized models

Mid-sized phones (e.g., iPhone 18 Pro)

  • Can be carried in small bags and large pockets

  • Evenly weighted, so easier to hold

  • Provide a compromise between big and small phones

  • Offer value for money for those looking for a larger screen

Larger phones (e.g., iPhone 18 Pro Max)

  • Bigger screen is good for working, gaming and watching videos

  • Often have the highest iPhone specs for that range

  • Offer greater visibility – especially for people with poor eyesight

  • May be easier to use if you’re mobility impaired

Foldable (iPhone Duo)

  • Can be used as a phone and a mini tablet

  • Durable design that protects the huge inner screen

  • Compatible with the Apple Pencil

  • Offers the longest-ever battery life

Do bigger iPhones have better battery life?

Bigger phones generally have bigger batteries. However, battery life depends on the individual device and generation, with newer models usually outperforming older iPhones.

The iPhone 18 Pro Max promises up to 43 hours of video playback per charge. The 18 Pro model, on the other hand, offers just 34 hours of video playback per charge, while Duo users can get up to 31 hours using the larger, inner screen, but can push that up to 44 hours on the outer display.

Compare iPhone deals

MoneySuperMarket can help you get the best deal on the iPhone you want.

Just use our search tool to find packages that include the model you are looking for from a wide range of networks. Then click through to apply for the deal you want.

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Jessica Bown

Insurance expert

Jessica Bown is an award-winning freelance journalist and editor who has been writing about personal finance for almost 20 years. She started her career on the Money team at the Daily Express, then...

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Alan Cairns

Senior Content Editor

Alan breaks down money, home, and energy topics into plain English to help you save money. Ask him about pound cost averaging or Balkonkraftwerk.

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