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OnePlus 9 vs Galaxy A55 5G: Size & Dimensions Compared

The Galaxy A55 5G is the larger phone, measuring 1.1mm shorter and 3.2mm narrower.

Visual Size Overlay

OnePlus 9Galaxy A55 5G
160mm161.1mm-1.1mm74.2mm77.4mm-3.2mm10mm
Height Δ
-1.1mm
Width Δ
-3.2mm
Thickness Δ
+0.5mm
Case CompatibilityWon't Fit
  • Height differs by 1.1mm — case won't fit
  • Width differs by 3.2mm — case won't fit
  • Thickness differs by 0.5mm — may affect fit
Screen ProtectorMay Fit

Same screen size (6.6") but body width differs by 3.2mm — verify bezel alignment before buying.

DimensionOnePlus 9Galaxy A55 5GDifference
Height160mm161.1mmGalaxy A55 5G +1.1mm (taller)
Width74.2mm77.4mmGalaxy A55 5G +3.2mm (wider)
Thickness8.7mm8.2mmGalaxy A55 5G -0.5mm (thinner)
Weight192g213gGalaxy A55 5G +21.0g (heavier)
Screen6.55"6.6"Same

Visual Size Comparison

HeightGalaxy A55 5G +1.1mm
OnePlus 9
160mm
Galaxy A55 5G
161.1mm
WidthGalaxy A55 5G +3.2mm
OnePlus 9
74.2mm
Galaxy A55 5G
77.4mm
ThicknessOnePlus 9 +0.5mm
OnePlus 9
8.7mm
Galaxy A55 5G
8.2mm

Button & Port Layout

Which is bigger?

The Galaxy A55 5G is the taller phone at 161.1mm (vs 160mm). It is also 21g heavier.

Wireless Charging & MagSafe Compatibility

Only one phone supports wireless charging.

  • The Galaxy A55 5G does not support wireless charging. Only the OnePlus 9 can use a wireless charger.
SpecOnePlus 9Galaxy A55 5G
Wireless Charging10WNo
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 OnePlus 9 to Galaxy A55 5G?

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

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Frequently Asked Questions

Is OnePlus 9 bigger than Galaxy A55 5G?

No, the Galaxy A55 5G is 1.1mm taller. The OnePlus 9 weighs 192g vs 213g.

Are OnePlus 9 and Galaxy A55 5G the same size?

No, the height differs by 1.1mm, width by 3.2mm, and thickness by 0.5mm.