Galaxy S25+ vs OnePlus 9: Size & Dimensions Compared
The OnePlus 9 is the larger phone, measuring 1.6mm shorter and 1.6mm wider.
Visual Size Overlay
- •Height differs by 1.6mm — case won't fit
- •Width differs by 1.6mm — case won't fit
- •1.4mm thicker — case won't close properly
Screen sizes differ (6.7" vs 6.55") — protector won't fit.
| Dimension | Galaxy S25+ | OnePlus 9 | Difference |
|---|---|---|---|
| Height | 158.4mm | 160mm | OnePlus 9 +1.6mm (taller) |
| Width | 75.8mm | 74.2mm | OnePlus 9 -1.6mm (narrower) |
| Thickness | 7.3mm | 8.7mm | OnePlus 9 +1.4mm (thicker) |
| Weight | 190g | 192g | OnePlus 9 +2.0g (heavier) |
| Screen | 6.7" | 6.55" | OnePlus 9 -0.2" (smaller) |
Visual Size Comparison
Button & Port Layout
Which is bigger?
The OnePlus 9 is the taller phone at 160mm (vs 158.4mm). It is also 2g 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+ | OnePlus 9 |
|---|---|---|
| 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 OnePlus 9?
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+
$15.99
Spigen
Spigen Ultra Hybrid for Galaxy S25+
$16.99
OtterBox
OtterBox Defender Series for Galaxy S25+
$64.95
As an Amazon Associate, WillItSnap earns from qualifying purchases.
Frequently Asked Questions
Is Galaxy S25+ bigger than OnePlus 9?
No, the OnePlus 9 is 1.6mm taller. The Galaxy S25+ weighs 190g vs 192g.
Are Galaxy S25+ and OnePlus 9 the same size?
No, the height differs by 1.6mm, width by 1.6mm, and thickness by 1.4mm.