iPhone 18 Pro vs iPhone SE (3rd gen) size
The iPhone 18 Pro measures 150 x 71.9 x 8.75 mm and the iPhone SE (3rd gen) measures 138.4 x 67.3 x 7.3 mm. The iPhone 18 Pro is the bigger phone. Its front covers 15.8% more area than the iPhone SE (3rd gen).
- iPhone 18 Pro211 g150 x 71.9 x 8.8 mm
- iPhone SE (3rd gen)144 g138.4 x 67.3 x 7.3 mm
Outlines are drawn from published dimensions. Screen and camera shapes are simplified.
How the iPhone 18 Pro measures up
| Spec | iPhone 18 Pro | iPhone SE (3rd gen) | Difference |
|---|---|---|---|
| Height | 150 mm 5.91 in | 138.4 mm 5.45 in | +11.6 mm (+8.4%) |
| Width | 71.9 mm 2.83 in | 67.3 mm 2.65 in | +4.6 mm (+6.8%) |
| Thickness | 8.75 mm 0.34 in | 7.3 mm 0.29 in | +1.45 mm (+19.9%) |
| Weight | 211 g 7.4 oz | 144 g 5.1 oz | +67 g (+46.5%) |
| Screen | 6.3 in | 4.7 in | +1.6 in (+34.0%) |
| Front footprint | 107.9 cm² | 93.1 cm² | +14.7 cm² (+15.8%) |
What the difference feels like
The iPhone 18 Pro is 4.6 mm wider, an obvious difference in the hand. If you use your phone one-handed, the iPhone SE (3rd gen) will be easier to reach across.
In a jeans pocket the iPhone 18 Pro sits 11.6 mm higher, about 0.46 inches.
The iPhone 18 Pro is 1.45 mm thicker. Manufacturers measure thickness without the camera bump, so the real difference at the camera can be larger.
At 67 g heavier (2.4 oz), the iPhone 18 Pro is noticeably heftier when you hold it up to read.
Common questions
Is the iPhone 18 Pro bigger than the iPhone SE (3rd gen)?
The iPhone 18 Pro is the bigger phone. Its front covers 15.8% more area than the iPhone SE (3rd gen). Height differs by 11.6 mm and width by 4.6 mm.
Will a iPhone SE (3rd gen) case fit the iPhone 18 Pro?
No. A case is cut for one model's exact size, buttons and camera, and these two differ by 11.6 mm in height and 4.6 mm in width. Buy a case made for the iPhone 18 Pro.
Which is easier to use with one hand?
The iPhone SE (3rd gen), because it is 4.6 mm narrower. Width matters more than height for reaching across the screen with your thumb.
Cases and prices
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Sources
- iPhone 18 Pro: manufacturer spec page
- iPhone SE (3rd gen): manufacturer spec page
See each phone's page for the full spec: iPhone 18 Pro and iPhone SE (3rd gen).