Galaxy Z Fold 3 vs Galaxy S21: Size & Dimensions Compared
The Galaxy Z Fold 3 is the larger phone, measuring 6.5mm taller and 4.1mm narrower.
Visual Size Overlay
- •Height differs by 6.5mm — case won't fit
- •Width differs by 4.1mm — case won't fit
- •8.1mm thicker — case won't close properly
Screen sizes differ (7.6" vs 6.2") — protector won't fit.
| Dimension | Galaxy Z Fold 3 | Galaxy S21 | Difference |
|---|---|---|---|
| Height | 158.2mm | 151.7mm | Galaxy S21 -6.5mm (shorter) |
| Width | 67.1mm | 71.2mm | Galaxy S21 +4.1mm (wider) |
| Thickness | 16mm | 7.9mm | Galaxy S21 -8.1mm (thinner) |
| Weight | 271g | 169g | Galaxy S21 -102.0g (lighter) |
| Screen | 7.6" | 6.2" | Galaxy S21 -1.4" (smaller) |
Visual Size Comparison
Button & Port Layout
Which is bigger?
The Galaxy Z Fold 3 is the taller phone at 158.2mm (vs 151.7mm). It is also 102g 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 | Galaxy Z Fold 3 | 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 Galaxy Z Fold 3 to Galaxy S21?
Different sizes mean your old case probably won't fit. You'll need a new one.
Accessories for Galaxy Z Fold 3
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Frequently Asked Questions
Is Galaxy Z Fold 3 bigger than Galaxy S21?
Yes, the Galaxy Z Fold 3 is 6.5mm taller and 4.1mm narrower. The Galaxy Z Fold 3 weighs 271g vs 169g.
Are Galaxy Z Fold 3 and Galaxy S21 the same size?
No, the height differs by 6.5mm, width by 4.1mm, and thickness by 8.1mm.