No, your iPhone 12 Pro Max case won't fit the iPhone 15 Pro Max
The iPhone 12 Pro Max (160.8×78.1mm) and iPhone 15 Pro Max (159.9×76.7mm) differ too much for cases to be compatible.
Does a iPhone 12 Pro Max Case Fit iPhone 15 Pro Max?
Last verified: March 2026
No, a iPhone 12 Pro Max case will not fit the iPhone 15 Pro Max. The phones have different dimensions that make cases incompatible.
Your iPhone 12 Pro Max case will NOT fit the iPhone 15 Pro Max. Here's why:
- •Height differs by 0.9mm — case may be tight or loose
- •Width differs by 1.4mm — case won't fit
- •0.8mm thicker — case won't close properly
- •Camera bump size differs significantly
- •Camera bump protrusion slightly different
- •Mute toggle switch vs Action Button — case cutout shape is incompatible
- •Different charging port (lightning → usb-c) — bottom cutout won't match
| Spec | iPhone 12 Pro Max | iPhone 15 Pro Max | Diff |
|---|---|---|---|
| Height | 160.8mm | 159.9mm | iPhone 12 Pro Max +0.9mm |
| Width | 78.1mm | 76.7mm | iPhone 12 Pro Max +1.4mm |
| Thickness | 7.4mm | 8.25mm | iPhone 15 Pro Max +0.8mm |
| Camera Layout | square-triple | square-triple | Same |
| Port | lightning | usb-c | Different |
Button & Port Alignment
- •Mute toggle switch vs Action Button — case cutout shape is incompatible
Since your iPhone 12 Pro Max case won't work with the iPhone 15 Pro Max, here are the highest-rated cases that will:
Caseology
Caseology Parallax for iPhone 15 Pro Max
$16.99
Spigen
Spigen Ultra Hybrid MagFit for iPhone 15 Pro Max
$17.99
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Size Comparison
Wireless Charging & MagSafe
Wireless chargers and magnetic accessories work with both phones.
- Your MagSafe charger will work with both devices.
- Both devices have built-in magnets — MagSafe wallets, car mounts, and battery packs will snap onto either phone.
iPhone 12 Pro Max
MagSafe Gen 1
15W max
iPhone 15 Pro Max
MagSafe Gen 1
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 iPhone 12 Pro Max and iPhone 15 Pro Max the same size?
iPhone 12 Pro Max measures 160.8×78.1×7.4mm while iPhone 15 Pro Max measures 159.9×76.7×8.25mm. They are different sizes.
Can I use a iPhone 12 Pro Max screen protector on iPhone 15 Pro Max?
Same screen size (6.7") but body width differs by 1.4mm — verify bezel alignment before buying.
What's different between iPhone 12 Pro Max and iPhone 15 Pro Max dimensions?
The height differs by 0.9mm, the width by 1.4mm, and thickness by 0.8mm. They use different charging ports.
Do I need a new case for iPhone 15 Pro Max?
Yes, you'll need a new case. The iPhone 15 Pro Max has different dimensions than the iPhone 12 Pro Max, so cases are not interchangeable.
Will iPhone 12 Pro Max accessories work with iPhone 15 Pro Max?
Chargers and cables are compatible since both phones use different ports (lightning vs usb-c). 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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