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Galaxy A51 vs Galaxy Z Fold 4: Size & Dimensions Compared

The Galaxy A51 is the larger phone, measuring 3.4mm taller and 6.5mm wider.

Visual Size Overlay

Galaxy A51Galaxy Z Fold 4
158.5mm155.1mm+3.4mm73.6mm67.1mm+6.5mm10mm
Height Δ
+3.4mm
Width Δ
+6.5mm
Thickness Δ
-7.9mm
Case CompatibilityWon't Fit
  • Camera module layout is different — cutout won't align
Screen ProtectorNot Compatible

Screen sizes differ (6.5" vs 7.6") — protector won't fit.

DimensionGalaxy A51Galaxy Z Fold 4Difference
Height158.5mm155.1mmGalaxy Z Fold 4 -3.4mm (shorter)
Width73.6mm67.1mmGalaxy Z Fold 4 -6.5mm (narrower)
Thickness7.9mm15.8mmGalaxy Z Fold 4 +7.9mm (thicker)
Weight172g263gGalaxy Z Fold 4 +91.0g (heavier)
Screen6.5"7.6"Galaxy Z Fold 4 +1.1" (larger)

Visual Size Comparison

HeightGalaxy A51 +3.4mm
Galaxy A51
158.5mm
Galaxy Z Fold 4
155.1mm
WidthGalaxy A51 +6.5mm
Galaxy A51
73.6mm
Galaxy Z Fold 4
67.1mm
ThicknessGalaxy Z Fold 4 +7.9mm
Galaxy A51
7.9mm
Galaxy Z Fold 4
15.8mm

Button & Port Layout

Which is bigger?

The Galaxy A51 is the taller phone at 158.5mm (vs 155.1mm). It but is 91g lighter.

Wireless Charging & MagSafe Compatibility

Only one phone supports wireless charging.

  • The Galaxy A51 does not support wireless charging. Only the Galaxy Z Fold 4 can use a wireless charger.
SpecGalaxy A51Galaxy Z Fold 4
Wireless ChargingNo15W
Qi VersionQi
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 A51 to Galaxy Z Fold 4?

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 A51 bigger than Galaxy Z Fold 4?

Yes, the Galaxy A51 is 3.4mm taller and 6.5mm wider. The Galaxy A51 weighs 172g vs 263g.

Are Galaxy A51 and Galaxy Z Fold 4 the same size?

No, the height differs by 3.4mm, width by 6.5mm, and thickness by 7.9mm.