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Galaxy S25+ vs OnePlus 9: Size & Dimensions Compared

The OnePlus 9 is the larger phone, measuring 1.6mm shorter and 1.6mm wider.

Visual Size Overlay

Galaxy S25+OnePlus 9
158.4mm160mm-1.6mm75.8mm74.2mm+1.6mm10mm
Height Δ
-1.6mm
Width Δ
+1.6mm
Thickness Δ
-1.4mm
Case CompatibilityWon't Fit
  • Height differs by 1.6mm — case won't fit
  • Width differs by 1.6mm — case won't fit
  • 1.4mm thicker — case won't close properly
Screen ProtectorNot Compatible

Screen sizes differ (6.7" vs 6.55") — protector won't fit.

DimensionGalaxy S25+OnePlus 9Difference
Height158.4mm160mmOnePlus 9 +1.6mm (taller)
Width75.8mm74.2mmOnePlus 9 -1.6mm (narrower)
Thickness7.3mm8.7mmOnePlus 9 +1.4mm (thicker)
Weight190g192gOnePlus 9 +2.0g (heavier)
Screen6.7"6.55"OnePlus 9 -0.2" (smaller)

Visual Size Comparison

HeightOnePlus 9 +1.6mm
Galaxy S25+
158.4mm
OnePlus 9
160mm
WidthGalaxy S25+ +1.6mm
Galaxy S25+
75.8mm
OnePlus 9
74.2mm
ThicknessOnePlus 9 +1.4mm
Galaxy S25+
7.3mm
OnePlus 9
8.7mm

Button & Port Layout

Which is bigger?

The OnePlus 9 is the taller phone at 160mm (vs 158.4mm). It is also 2g 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 S25+OnePlus 9
Wireless Charging15W10W
Qi VersionQi2Qi
MagSafeNoNo
Built-in MagnetsNoNo
Magnet Ringnone built inunknown

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 S25+ to OnePlus 9?

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

Accessories for Galaxy S25+

Spigen

Spigen Liquid Air for Galaxy S25+

$15.99

View on Amazon

Spigen

Spigen Ultra Hybrid for Galaxy S25+

$16.99

View on Amazon

OtterBox

OtterBox Defender Series for Galaxy S25+

$64.95

View on Amazon

Accessories for OnePlus 9

As an Amazon Associate, WillItSnap earns from qualifying purchases.

Frequently Asked Questions

Is Galaxy S25+ bigger than OnePlus 9?

No, the OnePlus 9 is 1.6mm taller. The Galaxy S25+ weighs 190g vs 192g.

Are Galaxy S25+ and OnePlus 9 the same size?

No, the height differs by 1.6mm, width by 1.6mm, and thickness by 1.4mm.