iPhone 8 vs iPhone X: Size & Dimensions Compared

The iPhone X is the larger phone, measuring 5.2mm shorter and 3.6mm narrower.

DimensioniPhone 8iPhone XDifference
Height138.4mm143.6mmiPhone X +5.2mm
Width67.3mm70.9mmiPhone X +3.6mm
Thickness7.3mm7.7mmiPhone X +0.4mm
Weight148g174giPhone X +26.0g
Screen4.7"5.8"iPhone X +1.1"

Visual Size Comparison

HeightiPhone X +5.2mm
iPhone 8
138.4mm
iPhone X
143.6mm
WidthiPhone X +3.6mm
iPhone 8
67.3mm
iPhone X
70.9mm
ThicknessiPhone X +0.4mm
iPhone 8
7.3mm
iPhone X
7.7mm

Which is bigger?

The iPhone X is the taller phone at 143.6mm (vs 138.4mm). It is also 26g heavier.

Upgrading from iPhone 8 to iPhone X?

Different sizes mean your old case probably won't fit. You'll need a new one.

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Frequently Asked Questions

Is iPhone 8 bigger than iPhone X?

No, the iPhone X is 5.2mm taller. The iPhone 8 weighs 148g vs 174g.

Are iPhone 8 and iPhone X the same size?

No, the height differs by 5.2mm, width by 3.6mm, and thickness by 0.4mm.