No, your OnePlus Open case won't fit the Galaxy S25 Ultra
The OnePlus Open (153.4×73.3mm) and Galaxy S25 Ultra (162.8×77.6mm) differ too much for cases to be compatible.
Does a OnePlus Open Case Fit Galaxy S25 Ultra?
Last verified: March 2026
No, a OnePlus Open case will not fit the Galaxy S25 Ultra. The phones have different dimensions that make cases incompatible.
Your OnePlus Open case will NOT fit the Galaxy S25 Ultra. Here's why:
- •Camera module layout is different — cutout won't align
| Spec | OnePlus Open | Galaxy S25 Ultra | Diff |
|---|---|---|---|
| Height | 153.4mm | 162.8mm | Galaxy S25 Ultra +9.4mm |
| Width | 73.3mm | 77.6mm | Galaxy S25 Ultra +4.3mm |
| Thickness | 11.7mm | 8.2mm | OnePlus Open +3.5mm |
| Camera Layout | circular-triple | vertical-quad | Different |
| Port | usb-c | usb-c | Same |
Button & Port Alignment
- •New phone has S Pen slot — old case has no opening for it
- •Old phone has alert slider — new phone does not
Since your OnePlus Open case won't work with the Galaxy S25 Ultra, here are the highest-rated cases that will:
Samsung
Samsung Silicone Case for Galaxy S25 Ultra
$39.99
OtterBox
OtterBox Symmetry for Galaxy S25 Ultra
$49.95
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Size Comparison
Wireless Charging & MagSafe
Only one phone supports wireless charging.
- The OnePlus Open does not support wireless charging. Only the Galaxy S25 Ultra can use a wireless charger.
OnePlus Open
No wireless
Galaxy S25 Ultra
Qi2 only
15W max
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.
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Frequently Asked Questions
Are OnePlus Open and Galaxy S25 Ultra the same size?
OnePlus Open measures 153.4×73.3×11.7mm while Galaxy S25 Ultra measures 162.8×77.6×8.2mm. They are different sizes.
Can I use a OnePlus Open screen protector on Galaxy S25 Ultra?
Screen sizes differ (6.31" vs 6.9") — protector won't fit.
What's different between OnePlus Open and Galaxy S25 Ultra dimensions?
The height differs by 9.4mm, the width by 4.3mm, and thickness by 3.5mm. The camera module layout is also different.
Do I need a new case for Galaxy S25 Ultra?
Yes, you'll need a new case. The Galaxy S25 Ultra has different dimensions than the OnePlus Open, so cases are not interchangeable.
Will OnePlus Open accessories work with Galaxy S25 Ultra?
Chargers and cables are compatible since both phones use the same usb-c port. Cases and screen protectors depend on exact dimensions — check our compatibility results above.
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