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

The Galaxy A51 is the larger phone, measuring 73.6mm taller and 1.7mm wider.

Visual Size Overlay

Galaxy A51Galaxy Z Flip 4
158.5mm84.9mm+73.6mm73.6mm71.9mm+1.7mm10mm
Height Δ
+73.6mm
Width Δ
+1.7mm
Thickness Δ
-9.2mm
Case CompatibilityWon't Fit
  • Camera module layout is different — cutout won't align
Screen ProtectorNot Compatible

Screen sizes differ (6.5" vs 6.7") — protector won't fit.

DimensionGalaxy A51Galaxy Z Flip 4Difference
Height158.5mm84.9mmGalaxy Z Flip 4 -73.6mm (shorter)
Width73.6mm71.9mmGalaxy Z Flip 4 -1.7mm (narrower)
Thickness7.9mm17.1mmGalaxy Z Flip 4 +9.2mm (thicker)
Weight172g187gGalaxy Z Flip 4 +15.0g (heavier)
Screen6.5"6.7"Galaxy Z Flip 4 +0.2" (larger)

Visual Size Comparison

HeightGalaxy A51 +73.6mm
Galaxy A51
158.5mm
Galaxy Z Flip 4
84.9mm
WidthGalaxy A51 +1.7mm
Galaxy A51
73.6mm
Galaxy Z Flip 4
71.9mm
ThicknessGalaxy Z Flip 4 +9.2mm
Galaxy A51
7.9mm
Galaxy Z Flip 4
17.1mm

Button & Port Layout

Which is bigger?

The Galaxy A51 is the taller phone at 158.5mm (vs 84.9mm). It but is 15g lighter.

Wireless Charging & MagSafe Compatibility

Only one phone supports wireless charging.

  • The Galaxy A51 does not support wireless charging. Only the Galaxy Z Flip 4 can use a wireless charger.
SpecGalaxy A51Galaxy Z Flip 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 Flip 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 Flip 4?

Yes, the Galaxy A51 is 73.6mm taller and 1.7mm wider. The Galaxy A51 weighs 172g vs 187g.

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

No, the height differs by 73.6mm, width by 1.7mm, and thickness by 9.2mm.