No, your Galaxy S23 Ultra case won't fit the iPhone 16 Pro Max
The Galaxy S23 Ultra (163.4×78.1mm) and iPhone 16 Pro Max (163×77.6mm) differ too much for cases to be compatible.
Does a Galaxy S23 Ultra Case Fit iPhone 16 Pro Max?
Last verified: March 2026
No, a Galaxy S23 Ultra case will not fit the iPhone 16 Pro Max. The phones have different dimensions that make cases incompatible.
Your Galaxy S23 Ultra case will NOT fit the iPhone 16 Pro Max. Here's why:
- •Body dimensions are nearly identical, but the camera cutout is incompatible (vertical-quad vs square-triple)
| Spec | Galaxy S23 Ultra | iPhone 16 Pro Max | Diff |
|---|---|---|---|
| Height | 163.4mm | 163mm | Galaxy S23 Ultra +0.4mm |
| Width | 78.1mm | 77.6mm | Galaxy S23 Ultra +0.5mm |
| Thickness | 8.9mm | 8.25mm | Galaxy S23 Ultra +0.7mm |
| Camera Layout | vertical-quad | square-triple | Different |
| Port | usb-c | usb-c | Same |
Button & Port Alignment
- •New phone has Camera Control button — old case has no cutout for it
- •Old phone has S Pen slot — new phone does not
Since your Galaxy S23 Ultra case won't work with the iPhone 16 Pro Max, here are the highest-rated cases that will:
OtterBox
OtterBox Defender for iPhone 16 Pro Max
$64.95
Spigen
Spigen Ultra Hybrid for iPhone 16 Pro Max
$16.99
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Size Comparison
Wireless Charging & MagSafe
Wireless chargers work with both phones, but magnetic snap varies.
- Your MagSafe charger will charge the Galaxy S23 Ultra via Qi, but it won't magnetically snap on.
- Only the iPhone 16 Pro Max has built-in magnets for MagSafe accessories. The Galaxy S23 Ultra needs a magnetic case or ring adapter.
Galaxy S23 Ultra
Qi only
15W max
iPhone 16 Pro Max
MagSafe Gen 2
25W 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 Ultra and iPhone 16 Pro Max the same size?
Galaxy S23 Ultra measures 163.4×78.1×8.9mm while iPhone 16 Pro Max measures 163×77.6×8.25mm. They are different sizes.
Can I use a Galaxy S23 Ultra screen protector on iPhone 16 Pro Max?
Edge types differ (curved vs flat) — screen protector won't adhere properly.
What's different between Galaxy S23 Ultra and iPhone 16 Pro Max dimensions?
The height differs by 0.4mm, the width by 0.5mm, and thickness by 0.7mm. The camera module layout is also different.
Do I need a new case for iPhone 16 Pro Max?
Yes, you'll need a new case. The iPhone 16 Pro Max has different dimensions than the Galaxy S23 Ultra, so cases are not interchangeable.
Will Galaxy S23 Ultra accessories work with iPhone 16 Pro Max?
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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