No, your Galaxy A51 case won't fit the Galaxy S21 FE
The Galaxy A51 (158.5×73.6mm) and Galaxy S21 FE (155.7×74.5mm) differ too much for cases to be compatible.
Does a Galaxy A51 Case Fit Galaxy S21 FE?
Last verified: March 2026
No, a Galaxy A51 case will not fit the Galaxy S21 FE. The phones have different dimensions that make cases incompatible.
Your Galaxy A51 case will NOT fit the Galaxy S21 FE. Here's why:
- •Camera module layout is different — cutout won't align
| Spec | Galaxy A51 | Galaxy S21 FE | Diff |
|---|---|---|---|
| Height | 158.5mm | 155.7mm | Galaxy A51 +2.8mm |
| Width | 73.6mm | 74.5mm | Galaxy S21 FE +0.9mm |
| Thickness | 7.9mm | 7.9mm | Same |
| Camera Layout | vertical-quad | vertical-triple | Different |
| Port | usb-c | usb-c | Same |
Your Galaxy A51 case won't fit the Galaxy S21 FE. Find the right case:
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Size Comparison
Wireless Charging & MagSafe
Only one phone supports wireless charging.
- The Galaxy A51 does not support wireless charging. Only the Galaxy S21 FE can use a wireless charger.
Galaxy A51
No wireless
Galaxy S21 FE
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 A51 and Galaxy S21 FE the same size?
Galaxy A51 measures 158.5×73.6×7.9mm while Galaxy S21 FE measures 155.7×74.5×7.9mm. They are different sizes.
Can I use a Galaxy A51 screen protector on Galaxy S21 FE?
Same screen size (6.4") but body width differs by 0.9mm — verify bezel alignment before buying.
What's different between Galaxy A51 and Galaxy S21 FE dimensions?
The height differs by 2.8mm, the width by 0.9mm, and thickness by 0.0mm. The camera module layout is also different.
Do I need a new case for Galaxy S21 FE?
Yes, you'll need a new case. The Galaxy S21 FE has different dimensions than the Galaxy A51, so cases are not interchangeable.
Will Galaxy A51 accessories work with Galaxy S21 FE?
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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