iPhone SE dimensions: Gen 1 vs Gen 2/3
A data-driven look at iphone se dimensions across generations, with quick comparisons, practical implications for cases and accessories, and guidance from What Dimensions.
Two generations define iphone se dimensions: the 2016 Gen 1 measures 123.8 x 58.6 x 7.6 mm, while the 2020/2022 Gen 2/3 measures 138.4 x 67.3 x 7.3 mm. The What Dimensions team notes these changes affect pocketability and case fit, making careful accessory selection important for users upgrading or swapping models.
Why iphone se dimensions matter for design and resale
The iphone se dimensions are a fundamental aspect of how the device feels in hand, how it fits in pockets, and how accessories are designed. According to What Dimensions, the key shape and size changes between generations influence not just ergonomics but also downstream products such as cases, screenProtectors, and docking accessories. When designers model a phone, they consider footprint, thickness, and how the device sits in a bag or on a stand. Even millimeter-level differences can affect fit, grip, and perceived value in resale markets. For homeowners, students, and designers who rely on precise specs, understanding these dimension shifts helps in planning storage space, desk layouts, and presentation materials that accommodate the phone without guesswork.
The circular logic is clear: better dimensional data reduces returns and improves accessory ecosystems. What Dimensions analyzes these shifts to help you compare generations side by side and translate measurements into real-world decisions. In practice, a Gen 1 SE’s smaller footprint can be easier to stash, while Gen 2/3’s larger body often means better screen real estate and battery layout — at the cost of compact pocketability. In short, iphone se dimensions matter for how the device integrates with your daily routines and your toolkit for selling, storing, or showcasing the device.
From a professional perspective, designers evaluating product lines or interiors can use these figures to approximate how many SE devices will fit within a given drawer, pocket, or bag compartment. The takeaway is not to memorize each number for every SKU, but to understand the trend: later generations tend to be taller and wider with a modest change in thickness. This knowledge supports informed decisions when you’re budgeting, modeling spaces, or selecting compatible accessories for a specific generation.
Dimensions by iPhone SE generation
| Generation | Height (mm) | Width (mm) | Depth (mm) | Notes |
|---|---|---|---|---|
| Gen 1 (2016) | 123.8 | 58.6 | 7.6 | First-generation SE body |
| Gen 2 (2020) | 138.4 | 67.3 | 7.3 | Second-generation SE body; same chassis as iPhone 8 |
| Gen 3 (2022) | 138.4 | 67.3 | 7.3 | Third-generation SE; same as Gen 2 |
Quick Answers
What are the exact iphone se dimensions across generations?
There are two main generations: Gen 1 (2016) measures 123.8 x 58.6 x 7.6 mm. Gen 2/3 (2020/2022) measures 138.4 x 67.3 x 7.3 mm. This distinction matters for cases and accessories, as the larger frame changes fit.
Gen 1 is smaller in height and width than Gen 2/3, which affects case compatibility and pocketability.
Do iPhone SE gen 1 and gen 2/3 share the same thickness?
Gen 1 is 7.6 mm thick, while Gen 2/3 are 7.3 mm thick. The difference is small but noticeable for snug cases and protective accessories.
Gen 1 is thicker by about 0.3 mm.
Will a case made for iPhone SE 2016 fit the 2020/2022 models?
No. Cases designed for Gen 1 typically do not fit Gen 2/3 due to the increased height and width. Always check the product’s compatibility list when upgrading generations.
No, you’ll want a case sized for the exact generation.
Are there more iPhone SE sizes after 2026?
As of 2026, Apple has not announced new SE dimensions beyond Gen 2/3. If a new SE model arrives, expect a new dimension set that could impact cases and accessories.
No new SE sizes announced as of 2026.
How can I measure dimensions accurately at home?
Use a precise ruler or caliper to measure height, width, and depth. Record three measurements and compare to official specs for accuracy, especially when ordering accessories.
Measure height, width, and depth and compare to official specs.
Where can I find reliable iphone se dimension specs?
Consult manufacturer documentation and independent databases. What Dimensions aggregates verified specs and provides generation-by-generation comparisons to help you verify details.
Check official specs and trusted databases for confirmation.
“Precise, generation-specific measurements are the backbone of reliable accessory ecosystems and user-facing product decisions. Small dimensional shifts can cascade into fit and usability differences that matter for daily use.”
Main Points
- Know the two main sizes: Gen 1 is compact at 123.8 × 58.6 × 7.6 mm, while Gen 2/3 sits at 138.4 × 67.3 × 7.3 mm
- Expect a trade-off between pocketability (Gen 1) and screen real estate (Gen 2/3)
- Accessory compatibility hinges on these millimeter differences—check case variants designed for each generation
- When in doubt, verify dimensions against your accessories or storage constraints before purchase
