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No, your OnePlus 9 case won't fit the Galaxy A51

The OnePlus 9 (160×74.2mm) and Galaxy A51 (158.5×73.6mm) differ too much for cases to be compatible.

Does a OnePlus 9 Case Fit Galaxy A51?

Q: What's different between OnePlus 9 and Galaxy A51 dimensions?

The OnePlus 9 is 160mm tall and 74.2mm wide, while the Galaxy A51 is 158.5mm tall and 73.6mm wide. Camera module layout is different — cutout won't align

Last verified: March 2026

No, a OnePlus 9 case will not fit the Galaxy A51. The phones have different dimensions that make cases incompatible.

0Won't Fit

Your OnePlus 9 case will NOT fit the Galaxy A51. Here's why:

•Camera module layout is different — cutout won't align

Spec	OnePlus 9	Galaxy A51	Diff
Height	160mm	158.5mm	OnePlus 9 +1.5mm
Width	74.2mm	73.6mm	OnePlus 9 +0.6mm
Thickness	8.7mm	7.9mm	OnePlus 9 +0.8mm
Camera Layout	vertical-triple	vertical-quad	Different
Port	usb-c	usb-c	Same

Button & Port Alignment

•Old phone has alert slider — new phone does not

⭐Based on Amazon best-seller rankings and ratings

Your OnePlus 9 case won't fit the Galaxy A51. Find the right case:

🛡️Best Galaxy A51 Cases→🔒Rugged Cases for Galaxy A51→✨Clear Cases for Galaxy A51→👛Wallet Cases for Galaxy A51→

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Size Comparison

OnePlus 9Galaxy A51

Wireless Charging & MagSafe

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Only one phone supports wireless charging.

The Galaxy A51 does not support wireless charging. Only the OnePlus 9 can use a wireless charger.

OnePlus 9

Qi only

10W max

Galaxy A51

No wireless

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.

See all cases for Galaxy A51 →

🎁 Buying a case as a gift? Use our Gift Finder →⚡ Need a charger for your Galaxy A51? Check charger compatibility →

Does the screen protector fit? OnePlus 9 → Galaxy A51 Compare sizes: OnePlus 9 vs Galaxy A51

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Frequently Asked Questions

Are OnePlus 9 and Galaxy A51 the same size?

OnePlus 9 measures 160×74.2×8.7mm while Galaxy A51 measures 158.5×73.6×7.9mm. They are different sizes.

Can I use a OnePlus 9 screen protector on Galaxy A51?

Same screen size (6.5") but body width differs by 0.6mm — verify bezel alignment before buying.

What's different between OnePlus 9 and Galaxy A51 dimensions?

The height differs by 1.5mm, the width by 0.6mm, and thickness by 0.8mm. The camera module layout is also different.

Do I need a new case for Galaxy A51?

Yes, you'll need a new case. The Galaxy A51 has different dimensions than the OnePlus 9, so cases are not interchangeable.

Will OnePlus 9 accessories work with Galaxy A51?

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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