iPhone 18 Pro Max vs Galaxy S26+ size
The iPhone 18 Pro Max measures 163.4 x 78 x 8.75 mm and the Galaxy S26+ measures 158.4 x 75.8 x 7.3 mm. The iPhone 18 Pro Max is the bigger phone. Its front covers 6.2% more area than the Galaxy S26+.
- iPhone 18 Pro Max249 g163.4 x 78 x 8.8 mm
- Galaxy S26+190 g158.4 x 75.8 x 7.3 mm
Outlines are drawn from published dimensions. Screen and camera shapes are simplified.
How the iPhone 18 Pro Max measures up
| Spec | iPhone 18 Pro Max | Galaxy S26+ | Difference |
|---|---|---|---|
| Height | 163.4 mm 6.43 in | 158.4 mm 6.24 in | +5 mm (+3.2%) |
| Width | 78 mm 3.07 in | 75.8 mm 2.98 in | +2.2 mm (+2.9%) |
| Thickness | 8.75 mm 0.34 in | 7.3 mm 0.29 in | +1.45 mm (+19.9%) |
| Weight | 249 g 8.8 oz | 190 g 6.7 oz | +59 g (+31.1%) |
| Screen | 6.9 in | 6.7 in | +0.2 in (+3.0%) |
| Front footprint | 127.5 cm² | 120.1 cm² | +7.4 cm² (+6.2%) |
What the difference feels like
The iPhone 18 Pro Max is 2.2 mm wider. That is small, but you can feel it when you wrap your hand around the phone, and it adds a little stretch for one-handed typing.
In a jeans pocket the iPhone 18 Pro Max sits 5 mm higher, about 0.20 inches.
The iPhone 18 Pro Max is 1.45 mm thicker. Manufacturers measure thickness without the camera bump, so the real difference at the camera can be larger.
At 59 g heavier (2.1 oz), the iPhone 18 Pro Max is noticeably heftier when you hold it up to read.
Common questions
Is the iPhone 18 Pro Max bigger than the Galaxy S26+?
The iPhone 18 Pro Max is the bigger phone. Its front covers 6.2% more area than the Galaxy S26+. Height differs by 5 mm and width by 2.2 mm.
Will a Galaxy S26+ case fit the iPhone 18 Pro Max?
No. A case is cut for one model's exact size, buttons and camera, and these two differ by 5 mm in height and 2.2 mm in width. Buy a case made for the iPhone 18 Pro Max.
Which is easier to use with one hand?
The Galaxy S26+, because it is 2.2 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 Max: manufacturer spec page
- Galaxy S26+: manufacturer spec page
See each phone's page for the full spec: iPhone 18 Pro Max and Galaxy S26+.