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Galaxy S21 vs Galaxy Z Fold6: Size & Dimensions Compared

The Galaxy Z Fold6 is the larger phone, measuring 1.8mm shorter and 3.1mm wider.

Visual Size Overlay

Galaxy S21Galaxy Z Fold6
151.7mm153.5mm-1.8mm71.2mm68.1mm+3.1mm10mm
Height Δ
-1.8mm
Width Δ
+3.1mm
Thickness Δ
-4.2mm
Case CompatibilityWon't Fit
  • Height differs by 1.8mm — case won't fit
  • Width differs by 3.1mm — case won't fit
  • 4.2mm thicker — case won't close properly
Screen ProtectorNot Compatible

Screen sizes differ (6.2" vs 7.6") — protector won't fit.

DimensionGalaxy S21Galaxy Z Fold6Difference
Height151.7mm153.5mmGalaxy Z Fold6 +1.8mm (taller)
Width71.2mm68.1mmGalaxy Z Fold6 -3.1mm (narrower)
Thickness7.9mm12.1mmGalaxy Z Fold6 +4.2mm (thicker)
Weight169g239gGalaxy Z Fold6 +70.0g (heavier)
Screen6.2"7.6"Galaxy Z Fold6 +1.4" (larger)

Visual Size Comparison

HeightGalaxy Z Fold6 +1.8mm
Galaxy S21
151.7mm
Galaxy Z Fold6
153.5mm
WidthGalaxy S21 +3.1mm
Galaxy S21
71.2mm
Galaxy Z Fold6
68.1mm
ThicknessGalaxy Z Fold6 +4.2mm
Galaxy S21
7.9mm
Galaxy Z Fold6
12.1mm

Button & Port Layout

Which is bigger?

The Galaxy Z Fold6 is the taller phone at 153.5mm (vs 151.7mm). It is also 70g heavier.

Wireless Charging & MagSafe Compatibility

Wireless chargers work with both phones, but magnetic snap varies.

  • Both devices support wireless charging. Standard Qi/Qi2 chargers work with either phone.
SpecGalaxy S21Galaxy Z Fold6
Wireless Charging15W15W
Qi VersionQiQi
MagSafeNoNo
Built-in MagnetsNoNo

MagSafe cases are NOT cross-compatible between these devices — the case body is shaped to each phone, even though the internal magnet ring may be the same.

Upgrading from Galaxy S21 to Galaxy Z Fold6?

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 bigger than Galaxy Z Fold6?

No, the Galaxy Z Fold6 is 1.8mm taller. The Galaxy S21 weighs 169g vs 239g.

Are Galaxy S21 and Galaxy Z Fold6 the same size?

No, the height differs by 1.8mm, width by 3.1mm, and thickness by 4.2mm.