No, your OnePlus 9 case won't fit the Galaxy A15
The OnePlus 9 (160×74.2mm) and Galaxy A15 (160.1×76.8mm) differ too much for cases to be compatible.
Does a OnePlus 9 Case Fit Galaxy A15?
Last verified: March 2026
No, a OnePlus 9 case will not fit the Galaxy A15. The phones have different dimensions that make cases incompatible.
Your OnePlus 9 case will NOT fit the Galaxy A15. Here's why:
- •Width differs by 2.6mm — case won't fit
- •Thickness differs by 0.3mm — may affect fit
- •Old phone has alert slider — new phone does not
| Spec | OnePlus 9 | Galaxy A15 | Diff |
|---|---|---|---|
| Height | 160mm | 160.1mm | Galaxy A15 +0.1mm |
| Width | 74.2mm | 76.8mm | Galaxy A15 +2.6mm |
| Thickness | 8.7mm | 8.4mm | OnePlus 9 +0.3mm |
| Camera Layout | vertical-triple | vertical-triple | Same |
| Port | usb-c | usb-c | Same |
Button & Port Alignment
- •Old phone has alert slider — new phone does not
Since your OnePlus 9 case won't work with the Galaxy A15, here are the highest-rated cases that will:
Spigen
Spigen Ultra Hybrid for Galaxy A15 5G
$15.99
Poetic
Poetic Revolution for Galaxy A15 5G
$19.99
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Size Comparison
Wireless Charging & MagSafe
Only one phone supports wireless charging.
- The Galaxy A15 does not support wireless charging. Only the OnePlus 9 can use a wireless charger.
OnePlus 9
Qi only
10W max
Galaxy A15
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.
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Frequently Asked Questions
Are OnePlus 9 and Galaxy A15 the same size?
OnePlus 9 measures 160×74.2×8.7mm while Galaxy A15 measures 160.1×76.8×8.4mm. They are different sizes.
Can I use a OnePlus 9 screen protector on Galaxy A15?
Same screen size (6.5") but body width differs by 2.6mm — verify bezel alignment before buying.
What's different between OnePlus 9 and Galaxy A15 dimensions?
The height differs by 0.1mm, the width by 2.6mm, and thickness by 0.3mm.
Do I need a new case for Galaxy A15?
Yes, you'll need a new case. The Galaxy A15 has different dimensions than the OnePlus 9, so cases are not interchangeable.
Will OnePlus 9 accessories work with Galaxy A15?
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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