Galaxy S23 Ultra vs Galaxy S25 Ultra: Size & Dimensions Compared
The Galaxy S23 Ultra and Galaxy S25 Ultra are nearly the same size, differing by just 0.6mm in height and 0.5mm in width.
Visual Size Overlay
- •Height differs by 0.6mm — case may be tight or loose
- •Width differs by 0.5mm — slight mismatch
- •0.7mm thicker — case won't close properly
Edge types differ (curved vs flat) — screen protector won't adhere properly.
| Dimension | Galaxy S23 Ultra | Galaxy S25 Ultra | Difference |
|---|---|---|---|
| Height | 163.4mm | 162.8mm | Galaxy S25 Ultra -0.6mm (shorter) |
| Width | 78.1mm | 77.6mm | Galaxy S25 Ultra -0.5mm (narrower) |
| Thickness | 8.9mm | 8.2mm | Galaxy S25 Ultra -0.7mm (thinner) |
| Weight | 234g | 218g | Galaxy S25 Ultra -16.0g (lighter) |
| Screen | 6.8" | 6.9" | Galaxy S25 Ultra +0.1" (larger) |
Visual Size Comparison
Button & Port Layout
Which is bigger?
The Galaxy S23 Ultra and Galaxy S25 Ultra are essentially the same size.
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 S23 Ultra | Galaxy S25 Ultra |
|---|---|---|
| Wireless Charging | 15W | 15W |
| Qi Version | Qi | Qi2 |
| MagSafe | No | No |
| Built-in Magnets | No | No |
| Magnet Ring | unknown | none built in |
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.
Accessories for Galaxy S23 Ultra
Spigen
Spigen Tough Armor for Galaxy S23 Ultra
$17.99
OtterBox
OtterBox Defender Series for Galaxy S23 Ultra
$64.95
TORRAS
TORRAS MarsClimber for Galaxy S23 Ultra
$19.99
Accessories for Galaxy S25 Ultra
Spigen
Spigen Tough Armor for Galaxy S25 Ultra
$18.99
Samsung
Samsung Silicone Case for Galaxy S25 Ultra
$39.99
OtterBox
OtterBox Symmetry for Galaxy S25 Ultra
$49.95
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Frequently Asked Questions
Is Galaxy S23 Ultra bigger than Galaxy S25 Ultra?
Yes, the Galaxy S23 Ultra is 0.6mm taller and 0.5mm wider. The Galaxy S23 Ultra weighs 234g vs 218g.
Are Galaxy S23 Ultra and Galaxy S25 Ultra the same size?
Very close — they differ by only 0.6mm in height and 0.5mm in width.