No, your Galaxy S23 case won't fit the Galaxy S21
The Galaxy S23 (146.3×70.9mm) and Galaxy S21 (151.7×71.2mm) differ too much for cases to be compatible.
Does a Galaxy S23 Case Fit Galaxy S21?
Last verified: March 2026
No, a Galaxy S23 case will not fit the Galaxy S21. The phones have different dimensions that make cases incompatible.
Your Galaxy S23 case will NOT fit the Galaxy S21. Here's why:
- •Height differs by 5.4mm — case won't fit
- •Thickness differs by 0.3mm — may affect fit
- •Camera bump size slightly different
| Spec | Galaxy S23 | Galaxy S21 | Diff |
|---|---|---|---|
| Height | 146.3mm | 151.7mm | Galaxy S21 +5.4mm |
| Width | 70.9mm | 71.2mm | Galaxy S21 +0.3mm |
| Thickness | 7.6mm | 7.9mm | Galaxy S21 +0.3mm |
| Camera Layout | vertical-triple | vertical-triple | Same |
| Port | usb-c | usb-c | Same |
Your Galaxy S23 case won't fit the Galaxy S21. 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
Qi only
15W max
Galaxy S21
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 S23 and Galaxy S21 the same size?
Galaxy S23 measures 146.3×70.9×7.6mm while Galaxy S21 measures 151.7×71.2×7.9mm. They are different sizes.
Can I use a Galaxy S23 screen protector on Galaxy S21?
Screen sizes are close (6.1" vs 6.2") but may not align perfectly.
What's different between Galaxy S23 and Galaxy S21 dimensions?
The height differs by 5.4mm, the width by 0.3mm, and thickness by 0.3mm.
Do I need a new case for Galaxy S21?
Yes, you'll need a new case. The Galaxy S21 has different dimensions than the Galaxy S23, so cases are not interchangeable.
Will Galaxy S23 accessories work with Galaxy S21?
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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