Actual Physical Dimensions of Every iPhone SE Model in Inches

The iPhone SE (Special Edition) lineup represents Apple's strategic approach to blending classic design with modern performance. For many users, the primary appeal of the SE series lies in its compact physical footprint. Unlike the ever-expanding Pro Max models, the iPhone SE remains the go-to choice for enthusiasts of one-handed operation and pocketability.

Understanding the precise dimensions of these devices is crucial, whether you are trying to identify which model you own, shopping for a protective case, or comparing the portability of different generations. There have been three distinct versions of the iPhone SE released since 2016, utilizing two primary physical chassis designs.

Quick Comparison of iPhone SE Dimensions

Before diving into the technical nuances of each generation, the table below provides a high-level overview of the height, width, depth, and weight of every iPhone SE model in inches.

While the numbers might seem close on paper, the transition from the 1st generation to the 2nd generation represented a significant jump in physical volume and screen real estate.

The First Generation iPhone SE (2016): The Ultra-Compact Original

The 1st Generation iPhone SE remains a cult classic. Released in March 2016, it repurposed the industrial design of the iPhone 5s, which many consider the pinnacle of Apple’s "flat-edge" aesthetic.

Physical Measurements and Construction

The 1st Gen SE measures exactly 4.87 inches (123.8 mm) in height, 2.31 inches (58.6 mm) in width, and has a thickness of 0.30 inches (7.6 mm). It is notably the "thickest" of the three generations, yet its overall volume is much smaller due to its narrow width and short height.

Weighing in at only 3.99 ounces (113 grams), it is the lightest iPhone Apple has produced in the modern era. The chassis is crafted from bead-blasted aluminum, giving it a matte finish that contrasts with the polished chamfered edges. Because the screen is only 4 inches diagonally, the device fits entirely within the palm of an average adult hand, allowing the thumb to reach all four corners of the display without shifting grip.

Impact of the 4-Inch Form Factor

The 4-inch display features an 1136-by-640-pixel resolution at 326 ppi. From a product design perspective, the dimensions of the 1st Gen SE were dictated by the internal components inherited from the iPhone 6s—specifically the A9 chip and the 12MP camera—crammed into the smaller 5s body.

In real-world use, this size is ideal for runners, minimalists, and those who prioritize utility over media consumption. However, the small dimensions meant a smaller battery; the 1st Gen SE houses a 1624 mAh battery, which was a technical limitation of the 4.87-inch frame.

The Second and Third Generation iPhone SE (2020 & 2022)

In 2020, Apple retired the 4-inch design for the SE line and adopted the 4.7-inch form factor previously seen in the iPhone 6, 7, and 8. The 2nd Gen (2020) and 3rd Gen (2022) share identical external dimensions.

Shared External Specs

Both the 2020 and 2022 models measure:

• Height: 5.45 inches (138.4 mm)
• Width: 2.65 inches (67.3 mm)
• Depth: 0.29 inches (7.3 mm)

This shift increased the height by 0.58 inches and the width by 0.34 inches compared to the original model. While the device became thinner (0.29 vs 0.30 inches), the increased surface area makes it feel more substantial. The transition to a glass-backed design (to allow for Qi wireless charging) also changed the tactile experience, making it sleeker but potentially more slippery.

The Subtle Weight Difference

While the dimensions are identical, the weight changed between the 2020 and 2022 releases due to internal structural optimizations:

• iPhone SE (2nd Gen, 2020): 5.22 ounces (148 grams)
• iPhone SE (3rd Gen, 2022): 5.09 ounces (144 grams)

A reduction of 0.13 ounces (4 grams) might seem negligible, but it reflects Apple's engineering progress in reducing the weight of internal brackets and the glass composition while maintaining the same external volume. In our hands-on testing, the 2022 model feels slightly better balanced, especially during long reading sessions.

Screen-to-Body Ratio and Bezel Dimensions

When discussing dimensions in inches, we must distinguish between the physical size of the phone and the size of the screen. The iPhone SE series is famous (or infamous, depending on your view) for its large bezels.

The Home Button and Top Bezel

Unlike the "all-screen" designs of the iPhone X and later, the SE models utilize significant "forehead" and "chin" bezels. On the 2nd and 3rd Gen models, the 4.7-inch screen occupies roughly 65.4% of the front surface. The remaining 34.6% is dedicated to the Touch ID sensor, the front-facing camera, and the earpiece.

For users, this means that even though the phone is 5.45 inches tall, the actual vertical viewing area is only about 4.1 inches. This design choice provides a physical "handle" for the phone, which prevents accidental touches on the screen while gaming or watching videos in landscape mode.

Aspect Ratio and Content Scaling

All iPhone SE models use a 16:9 aspect ratio. This is the standard for most video content. Because the physical width is constrained to 2.31 or 2.65 inches, text size is generally smaller than on a 6.1-inch iPhone 15. However, the pixel density remains consistent at 326 ppi across all generations, ensuring that even within these compact dimensions, the image remains sharp.

Accessory and Case Compatibility

One of the most common reasons for looking up iPhone SE dimensions in inches is to ensure case compatibility.

1st Gen Compatibility

The 1st Gen SE is physically identical to the iPhone 5 and iPhone 5s. If you find a vintage case or a specialized rugged protector designed for the 5s, it will fit the 2016 SE perfectly. However, it will not fit any other SE model.

2nd and 3rd Gen Compatibility

The 2020 and 2022 models are physically identical to the iPhone 8. This is a massive advantage for consumers, as the market is flooded with iPhone 8 cases that are fully compatible with the modern SE.

• Cases: Since the dimensions (5.45 x 2.65 x 0.29 in) and the placement of the camera, volume rockers, and silence switch are identical, cases are 100% interchangeable between the iPhone 8, iPhone SE (2020), and iPhone SE (2022).
• Screen Protectors: The curvature of the glass at the edges is consistent across these models, so any 4.7-inch screen protector designed for an iPhone 7 or 8 will work.

Ergonomics: How the Dimensions Feel in the Hand

As a product manager analyzing the SE series, the "Experience" of these dimensions is just as important as the raw numbers.

One-Handed Reachability

On the 5.45-inch tall SE (2020/2022), most users can reach the "Control Center" or "Notifications" with a slight adjustment of the grip. Apple included a software feature called "Reachability" (triggered by double-tapping the Home button) that slides the top half of the screen down. This feature is particularly useful on the SE's 4.7-inch screen for those with smaller hands.

Pocketability and Portability

The 0.29-inch depth makes the iPhone SE one of the thinnest devices in Apple's current lineup. It slides effortlessly into tight pockets or small handbag compartments. In contrast, an iPhone 15 Pro, with its 0.32-inch depth and significantly larger camera bump, creates a much more noticeable bulge. The SE's camera bump is minimal, adding only a fraction of an inch to the total depth at a single point.

Comparing SE Dimensions to Other Modern iPhones

To put these dimensions into perspective, it helps to compare the SE to the "Mini" and "Standard" iPhone models.

iPhone SE (3rd Gen) vs. iPhone 13 Mini

The iPhone 13 Mini is actually smaller in height and width than the iPhone SE (3rd Gen), despite having a larger screen.

• iPhone SE (3rd Gen): 5.45 x 2.65 x 0.29 in (4.7" screen)
• iPhone 13 Mini: 5.18 x 2.53 x 0.30 in (5.4" screen)

The 13 Mini achieves this by removing the bezels and the Home button. For users who want the smallest possible footprint, the 13 Mini is the winner. However, for those who prefer the tactile feel of a physical Home button, the SE's 5.45-inch height is a necessary trade-off.

iPhone SE vs. iPhone 15

The standard iPhone 15 is a significant step up in size:

• iPhone 15: 5.81 x 2.82 x 0.31 in (6.1" screen) The iPhone 15 is nearly 0.4 inches taller and 0.2 inches wider than the SE. While this doesn't sound like much, it changes the device from a "one-handed" phone to a "two-handed" phone for many users.

Impact of Size on Internal Engineering

The physical dimensions of the iPhone SE create unique challenges for Apple's engineers.

Battery Volume

In a device that is only 0.29 inches thick, every cubic millimeter is precious. The SE (3rd Gen) has a 2018 mAh battery. To fit the A15 Bionic chip and the 5G modems—which are power-hungry—Apple had to optimize the internal layout without increasing the 5.45 x 2.65-inch footprint. This is why the SE does not feature MagSafe magnets; the internal space required for the magnet array would have forced a reduction in battery size or an increase in thickness.

Thermal Management

Smaller dimensions also mean less surface area for heat dissipation. Under heavy loads, such as 4K video recording or high-end gaming, the SE may throttle its performance sooner than a larger iPhone 15 Pro. The 2.65-inch width limits the size of the logic board, which acts as the primary heat sink for the processor.

The Future of iPhone SE Dimensions: SE 4 Rumors

As of late 2024 and early 2025, industry reports suggest that the next iteration of the iPhone SE (likely the SE 4) will abandon the 4.7-inch design in favor of a 6.1-inch chassis based on the iPhone 14.

If these rumors hold true, the dimensions would shift to approximately:

• Expected Height: 5.78 inches
• Expected Width: 2.82 inches
• Expected Depth: 0.31 inches

This would mark the end of the "compact" SE era. For users who value the current 5.45-inch height, the 3rd Gen SE may be the last opportunity to own a device with these specific dimensions and a Home button.

Frequently Asked Questions (FAQ)

What are the dimensions of the iPhone SE 2022 in inches?

The iPhone SE 2022 (3rd Generation) measures 5.45 inches in height, 2.65 inches in width, and 0.29 inches in depth.

Does an iPhone SE 2020 case fit an iPhone SE 2022?

Yes. Both the 2nd and 3rd Generation iPhone SE share the exact same external dimensions and button placements, making their cases 100% compatible.

Which iPhone SE is the smallest?

The 1st Generation iPhone SE (2016) is the smallest, with a height of 4.87 inches and a width of 2.31 inches.

Is the iPhone SE the same size as the iPhone 8?

Yes, the 2nd and 3rd Generation iPhone SE models use the same physical chassis as the iPhone 8.

How many inches is the iPhone SE screen?

The 1st Generation has a 4.0-inch screen. The 2nd and 3rd Generations both have a 4.7-inch screen.

Summary

The iPhone SE series has successfully maintained a niche for users who prioritize compact dimensions and traditional design. From the ultra-portable 4.87-inch tall original to the refined 5.45-inch tall modern versions, these devices offer a level of pocketability that is increasingly rare in the smartphone market.

For current buyers, the 3rd Generation SE offers a proven form factor that is thin, light, and compatible with a vast ecosystem of accessories. While future models may grow in size to accommodate larger displays, the current dimensions remain a benchmark for ergonomic, one-handed smartphone design. Whether you are upgrading from an older model or looking for a secondary device, the iPhone SE’s dimensions in inches prove that sometimes, less truly is more.