Galaxy S21 Ultra vs Galaxy S23+: Size & Dimensions Compared

The Galaxy S21 Ultra is the larger phone, measuring 7.3mm taller and 0.6mm narrower.

DimensionGalaxy S21 UltraGalaxy S23+Difference
Height165.1mm157.8mmGalaxy S21 Ultra +7.3mm
Width75.6mm76.2mmGalaxy S23+ +0.6mm
Thickness8.9mm7.6mmGalaxy S21 Ultra +1.3mm
Weight227g196gGalaxy S21 Ultra +31.0g
Screen6.8"6.6"Galaxy S21 Ultra +0.2"

Visual Size Comparison

HeightGalaxy S21 Ultra +7.3mm
Galaxy S21 Ultra
165.1mm
Galaxy S23+
157.8mm
WidthGalaxy S23+ +0.6mm
Galaxy S21 Ultra
75.6mm
Galaxy S23+
76.2mm
ThicknessGalaxy S21 Ultra +1.3mm
Galaxy S21 Ultra
8.9mm
Galaxy S23+
7.6mm

Which is bigger?

The Galaxy S21 Ultra is the taller phone at 165.1mm (vs 157.8mm). It is also 31g heavier.

Upgrading from Galaxy S21 Ultra to Galaxy S23+?

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

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Frequently Asked Questions

Is Galaxy S21 Ultra bigger than Galaxy S23+?

Yes, the Galaxy S21 Ultra is 7.3mm taller and 0.6mm narrower. The Galaxy S21 Ultra weighs 227g vs 196g.

Are Galaxy S21 Ultra and Galaxy S23+ the same size?

No, the height differs by 7.3mm, width by 0.6mm, and thickness by 1.3mm.