Galaxy S25 Edge vs Galaxy S21 Ultra: Size & Dimensions Compared
The Galaxy S21 Ultra is the larger phone, measuring 6.9mm shorter and 0.0mm narrower.
Visual Size Overlay
- •Camera module layout is different — cutout won't align
Edge types differ (flat vs curved) — screen protector won't adhere properly.
| Dimension | Galaxy S25 Edge | Galaxy S21 Ultra | Difference |
|---|---|---|---|
| Height | 158.2mm | 165.1mm | Galaxy S21 Ultra +6.9mm (taller) |
| Width | 75.6mm | 75.6mm | Same |
| Thickness | 5.8mm | 8.9mm | Galaxy S21 Ultra +3.1mm (thicker) |
| Weight | 163g | 227g | Galaxy S21 Ultra +64.0g (heavier) |
| Screen | 6.7" | 6.8" | Galaxy S21 Ultra +0.1" (larger) |
Visual Size Comparison
Button & Port Layout
Which is bigger?
The Galaxy S21 Ultra is the taller phone at 165.1mm (vs 158.2mm). It is also 64g 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 S25 Edge | Galaxy S21 Ultra |
|---|---|---|
| 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 S25 Edge to Galaxy S21 Ultra?
Different sizes mean your old case probably won't fit. You'll need a new one.
Accessories for Galaxy S25 Edge
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Frequently Asked Questions
Is Galaxy S25 Edge bigger than Galaxy S21 Ultra?
No, the Galaxy S21 Ultra is 6.9mm taller. The Galaxy S25 Edge weighs 163g vs 227g.
Are Galaxy S25 Edge and Galaxy S21 Ultra the same size?
No, the height differs by 6.9mm, width by 0.0mm, and thickness by 3.1mm.