Galaxy S25 vs Galaxy S20 Ultra: Size & Dimensions Compared
The Galaxy S20 Ultra is the larger phone, measuring 20.0mm shorter and 5.5mm 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 | Galaxy S20 Ultra | Difference |
|---|---|---|---|
| Height | 146.9mm | 166.9mm | Galaxy S20 Ultra +20.0mm (taller) |
| Width | 70.5mm | 76mm | Galaxy S20 Ultra +5.5mm (wider) |
| Thickness | 7.2mm | 8.8mm | Galaxy S20 Ultra +1.6mm (thicker) |
| Weight | 162g | 220g | Galaxy S20 Ultra +58.0g (heavier) |
| Screen | 6.2" | 6.9" | Galaxy S20 Ultra +0.7" (larger) |
Visual Size Comparison
Button & Port Layout
Which is bigger?
The Galaxy S20 Ultra is the taller phone at 166.9mm (vs 146.9mm). It is also 58g 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 | Galaxy S20 Ultra |
|---|---|---|
| Wireless Charging | 15W | 10W |
| Qi Version | Qi2 | Qi |
| MagSafe | No | No |
| Built-in Magnets | No | No |
| Magnet Ring | none built in | unknown |
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 to Galaxy S20 Ultra?
Different sizes mean your old case probably won't fit. You'll need a new one.
Accessories for Galaxy S25
Spigen
Spigen Liquid Air for Galaxy S25
$14.99
Samsung
Samsung Galaxy S25 Silicone Case
$29.99
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Frequently Asked Questions
Is Galaxy S25 bigger than Galaxy S20 Ultra?
No, the Galaxy S20 Ultra is 20.0mm taller. The Galaxy S25 weighs 162g vs 220g.
Are Galaxy S25 and Galaxy S20 Ultra the same size?
No, the height differs by 20.0mm, width by 5.5mm, and thickness by 1.6mm.