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Galaxy S21 Ultra vs OnePlus Nord N300 5G: Size & Dimensions Compared

The Galaxy S21 Ultra is the larger phone, measuring 1.3mm taller and 0.5mm wider.

Visual Size Overlay

Galaxy S21 UltraOnePlus Nord N300 5G
165.1mm163.8mm+1.3mm75.6mm75.1mm+0.5mm10mm
Height Δ
+1.3mm
Width Δ
+0.5mm
Thickness Δ
+0.9mm
Case CompatibilityWon't Fit
  • Camera module layout is different — cutout won't align
Screen ProtectorNot Compatible

Edge types differ (curved vs flat) — screen protector won't adhere properly.

DimensionGalaxy S21 UltraOnePlus Nord N300 5GDifference
Height165.1mm163.8mmOnePlus Nord N300 5G -1.3mm (shorter)
Width75.6mm75.1mmOnePlus Nord N300 5G -0.5mm (narrower)
Thickness8.9mm7.99mmOnePlus Nord N300 5G -0.9mm (thinner)
Weight227g190gOnePlus Nord N300 5G -37.0g (lighter)
Screen6.8"6.56"OnePlus Nord N300 5G -0.2" (smaller)

Visual Size Comparison

HeightGalaxy S21 Ultra +1.3mm
Galaxy S21 Ultra
165.1mm
OnePlus Nord N300 5G
163.8mm
WidthGalaxy S21 Ultra +0.5mm
Galaxy S21 Ultra
75.6mm
OnePlus Nord N300 5G
75.1mm
ThicknessGalaxy S21 Ultra +0.9mm
Galaxy S21 Ultra
8.9mm
OnePlus Nord N300 5G
7.99mm

Button & Port Layout

Which is bigger?

The Galaxy S21 Ultra is the taller phone at 165.1mm (vs 163.8mm). It is also 37g heavier.

Wireless Charging & MagSafe Compatibility

Only one phone supports wireless charging.

  • The OnePlus Nord N300 5G does not support wireless charging. Only the Galaxy S21 Ultra can use a wireless charger.
SpecGalaxy S21 UltraOnePlus Nord N300 5G
Wireless Charging15WNo
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 S21 Ultra to OnePlus Nord N300 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 Galaxy S21 Ultra bigger than OnePlus Nord N300 5G?

Yes, the Galaxy S21 Ultra is 1.3mm taller and 0.5mm wider. The Galaxy S21 Ultra weighs 227g vs 190g.

Are Galaxy S21 Ultra and OnePlus Nord N300 5G the same size?

No, the height differs by 1.3mm, width by 0.5mm, and thickness by 0.9mm.