No, your Galaxy S20 Ultra case won't fit the Galaxy S23 Ultra
The Galaxy S20 Ultra (166.9×76mm) and Galaxy S23 Ultra (163.4×78.1mm) differ too much for cases to be compatible.
Does a Galaxy S20 Ultra Case Fit Galaxy S23 Ultra?
Last verified: March 2026
No, a Galaxy S20 Ultra case will not fit the Galaxy S23 Ultra. The phones have different dimensions that make cases incompatible.
Your Galaxy S20 Ultra case will NOT fit the Galaxy S23 Ultra. Here's why:
- •Camera module layout is different — cutout won't align
| Spec | Galaxy S20 Ultra | Galaxy S23 Ultra | Diff |
|---|---|---|---|
| Height | 166.9mm | 163.4mm | Galaxy S20 Ultra +3.5mm |
| Width | 76mm | 78.1mm | Galaxy S23 Ultra +2.1mm |
| Thickness | 8.8mm | 8.9mm | Galaxy S23 Ultra +0.1mm |
| Camera Layout | rectangular-module | 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
Since your Galaxy S20 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 S20 Ultra
Qi only
10W 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 S20 Ultra and Galaxy S23 Ultra the same size?
Galaxy S20 Ultra measures 166.9×76×8.8mm while Galaxy S23 Ultra measures 163.4×78.1×8.9mm. They are different sizes.
Can I use a Galaxy S20 Ultra screen protector on Galaxy S23 Ultra?
Screen sizes are close (6.9" vs 6.8") but may not align perfectly.
What's different between Galaxy S20 Ultra and Galaxy S23 Ultra dimensions?
The height differs by 3.5mm, the width by 2.1mm, and thickness by 0.1mm. The camera module layout is also different.
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 S20 Ultra, so cases are not interchangeable.
Will Galaxy S20 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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