No, your Galaxy S25 Ultra case won't fit the Galaxy S23 Ultra
The Galaxy S25 Ultra (162.8×77.6mm) and Galaxy S23 Ultra (163.4×78.1mm) differ too much for cases to be compatible.
Does a Galaxy S25 Ultra Case Fit Galaxy S23 Ultra?
Last verified: March 2026
No, a Galaxy S25 Ultra case will not fit the Galaxy S23 Ultra. The phones have different dimensions that make cases incompatible.
Your Galaxy S25 Ultra case will NOT fit the Galaxy S23 Ultra. Here's why:
- •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
- •Different edge profiles (flat vs curved) — case shell shape won't match
- •Corner shape differs — case won't seat properly
| Spec | Galaxy S25 Ultra | Galaxy S23 Ultra | Diff |
|---|---|---|---|
| Height | 162.8mm | 163.4mm | Galaxy S23 Ultra +0.6mm |
| Width | 77.6mm | 78.1mm | Galaxy S23 Ultra +0.5mm |
| Thickness | 8.2mm | 8.9mm | Galaxy S23 Ultra +0.7mm |
| Camera Layout | vertical-quad | vertical-quad | Same |
| Port | usb-c | usb-c | Same |
Since your Galaxy S25 Ultra case won't work with the Galaxy S23 Ultra, here are the highest-rated cases that will:
OtterBox
OtterBox Defender Series for Galaxy S23 Ultra
$64.95
TORRAS
TORRAS MarsClimber for Galaxy S23 Ultra
$19.99
Caseology
Caseology Nano Pop for Galaxy S23 Ultra
$15.99
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Size Comparison
Wireless Charging & MagSafe
Wireless chargers work with both phones, but magnetic snap varies.
- Both devices support wireless charging. Standard Qi/Qi2 chargers work with either phone.
Galaxy S25 Ultra
Qi2 only
15W max
Galaxy S23 Ultra
Qi 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 Galaxy S25 Ultra and Galaxy S23 Ultra the same size?
Galaxy S25 Ultra measures 162.8×77.6×8.2mm while Galaxy S23 Ultra measures 163.4×78.1×8.9mm. They are different sizes.
Can I use a Galaxy S25 Ultra screen protector on Galaxy S23 Ultra?
Edge types differ (flat vs curved) — screen protector won't adhere properly.
What's different between Galaxy S25 Ultra and Galaxy S23 Ultra dimensions?
The height differs by 0.6mm, the width by 0.5mm, and thickness by 0.7mm.
Do I need a new case for Galaxy S23 Ultra?
Yes, you'll need a new case. The Galaxy S23 Ultra has different dimensions than the Galaxy S25 Ultra, so cases are not interchangeable.
Will Galaxy S25 Ultra accessories work with Galaxy S23 Ultra?
Chargers and cables are compatible since both phones use the same usb-c port. Both support wireless charging, so wireless chargers work with either phone. Cases and screen protectors depend on exact dimensions — check our compatibility results above.
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