No, your Galaxy S23 Ultra case won't fit the Galaxy S20 Ultra
The Galaxy S23 Ultra (163.4×78.1mm) and Galaxy S20 Ultra (166.9×76mm) differ too much for cases to be compatible.
Does a Galaxy S23 Ultra Case Fit Galaxy S20 Ultra?
Last verified: March 2026
No, a Galaxy S23 Ultra case will not fit the Galaxy S20 Ultra. The phones have different dimensions that make cases incompatible.
Your Galaxy S23 Ultra case will NOT fit the Galaxy S20 Ultra. Here's why:
- •Camera module layout is different — cutout won't align
| Spec | Galaxy S23 Ultra | Galaxy S20 Ultra | Diff |
|---|---|---|---|
| Height | 163.4mm | 166.9mm | Galaxy S20 Ultra +3.5mm |
| Width | 78.1mm | 76mm | Galaxy S23 Ultra +2.1mm |
| Thickness | 8.9mm | 8.8mm | Galaxy S23 Ultra +0.1mm |
| Camera Layout | vertical-quad | rectangular-module | Different |
| Port | usb-c | usb-c | Same |
Button & Port Alignment
- •Old phone has S Pen slot — new phone does not
Your Galaxy S23 Ultra case won't fit the Galaxy S20 Ultra. Find the right case:
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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 S23 Ultra
Qi only
15W max
Galaxy S20 Ultra
Qi only
10W 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 S23 Ultra and Galaxy S20 Ultra the same size?
Galaxy S23 Ultra measures 163.4×78.1×8.9mm while Galaxy S20 Ultra measures 166.9×76×8.8mm. They are different sizes.
Can I use a Galaxy S23 Ultra screen protector on Galaxy S20 Ultra?
Screen sizes are close (6.8" vs 6.9") but may not align perfectly.
What's different between Galaxy S23 Ultra and Galaxy S20 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 S20 Ultra?
Yes, you'll need a new case. The Galaxy S20 Ultra has different dimensions than the Galaxy S23 Ultra, so cases are not interchangeable.
Will Galaxy S23 Ultra accessories work with Galaxy S20 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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