OnePlus 13 vs Galaxy S21: Size & Dimensions Compared
The OnePlus 13 is the larger phone, measuring 11.2mm taller and 5.3mm wider.
Visual Size Overlay
- •Camera module layout is different — cutout won't align
Screen sizes differ (6.82" vs 6.2") — protector won't fit.
| Dimension | OnePlus 13 | Galaxy S21 | Difference |
|---|---|---|---|
| Height | 162.9mm | 151.7mm | Galaxy S21 -11.2mm (shorter) |
| Width | 76.5mm | 71.2mm | Galaxy S21 -5.3mm (narrower) |
| Thickness | 8.5mm | 7.9mm | Galaxy S21 -0.6mm (thinner) |
| Weight | 213g | 169g | Galaxy S21 -44.0g (lighter) |
| Screen | 6.82" | 6.2" | Galaxy S21 -0.6" (smaller) |
Visual Size Comparison
Button & Port Layout
Which is bigger?
The OnePlus 13 is the taller phone at 162.9mm (vs 151.7mm). It is also 44g 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.
| Spec | OnePlus 13 | Galaxy S21 |
|---|---|---|
| Wireless Charging | 15W | 15W |
| Qi Version | Qi | Qi |
| MagSafe | No | No |
| Built-in Magnets | No | No |
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 13 to Galaxy S21?
Different sizes mean your old case probably won't fit. You'll need a new one.
Accessories for OnePlus 13
Spigen
Spigen Ultra Hybrid for OnePlus 13
$15.99
Ringke
Ringke Fusion-X MagSafe for OnePlus 13
$23.99
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Frequently Asked Questions
Is OnePlus 13 bigger than Galaxy S21?
Yes, the OnePlus 13 is 11.2mm taller and 5.3mm wider. The OnePlus 13 weighs 213g vs 169g.
Are OnePlus 13 and Galaxy S21 the same size?
No, the height differs by 11.2mm, width by 5.3mm, and thickness by 0.6mm.