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