Upgrading to a new phone often raises one big question: Does an iPhone 12 Pro Max case fit the 15 Pro Max? We hear it all the time from customers who love their old case and hope it'll work with their new device. Both phones might look similar at first glance, but their dimensions, button placements, and camera designs tell a different story.
From our experience, these subtle changes can make all the difference when it comes to protection and usability. We'll unpack what sets the two models apart, why the old case doesn't quite make the cut, and what to look for when choosing the perfect case for your iPhone 15 Pro Max.
What this article covers:
- Will an iPhone 12 Pro Max Case Fit an iPhone 15 Pro Max?
- iPhone 12 Pro Max vs iPhone 15 Pro Max Dimensions
- Should You Buy a New Case for Your iPhone 15 Pro Max?
Will an iPhone 12 Pro Max Case Fit an iPhone 15 Pro Max?
No, a case designed for the iPhone 12 Pro Max will not properly fit the iPhone 15 Pro Max in a way that offers full compatibility and protection. From our experience putting it to the test, there are key dimensional and design changes between the two models that interfere with fit and function.
Although both phones fall under the “Pro Max” category with a 6.7-inch display, the iPhone 15 Pro Max is slightly different in size and shape. Button placement, camera module design, and overall thickness have all been updated. Even if the phone physically slides into the old case, the fit may be loose or the alignment off, which means protection and usability drop.
We've seen how even the smallest change can affect how a case performs. A few millimetres can mean the difference between a snug fit and a wobbly one. That's why we always recommend using a case designed specifically for your iPhone model.
Want to know about case compatibility for other models? Be sure to read our guides on do iPhone 14 Plus cases fit iPhone 15 Plus and will iPhone 13 Pro Max case fit iPhone 15 Pro Max.
iPhone 12 Pro Max vs iPhone 15 Pro Max Dimensions
Let's look at the numbers, because with years in the industry, we know how much these details matter.
- iPhone 12 Pro Max dimensions: 160.8 × 78.1 × 7.4 mm (height × width × thickness)
- iPhone 15 Pro Max dimensions: 159.9 × 76.7 × 8.25 mm (height × width × thickness)
The iPhone 15 Pro Max is slightly shorter and narrower but thicker than the 12 Pro Max. That difference might sound small, but it's enough to make an older case incompatible.
The thicker build means your old case might not fit properly, while the smaller height and width could cause the phone to shift inside the case. Even a 0.5 mm variance can affect how well the case holds the phone, aligns with the camera, or allows the buttons to function smoothly.
These design differences affect all case models. So even if you're wondering about other models, like, do iPhone 15 Pro cases fit iPhone 13 Pro, or will iPhone 15 Pro Max case fit iPhone 15 Plus, the answer will be the same.
Should You Buy a New Case for Your iPhone 15 Pro Max?
Yes, you should. If you want the best protection and usability, a new case designed specifically for the iPhone 15 Pro Max is the way to go. A properly fitted case makes all the difference. The buttons feel right, the camera sits perfectly within its frame, and every edge is aligned the way it should be.
The 15 Pro Max also introduced subtle design updates, including changes to the camera housing and overall frame curvature. Those updates mean a case built for the 12 Pro Max simply won't match up. Forcing the old case could damage the buttons or ports, or leave areas exposed.
A dedicated iPhone 15 Pro Max case ensures your phone stays protected while maintaining a premium feel.
If your old case is high quality and you're in a pinch, you might temporarily use it, but treat it as a stopgap. Check for loose edges or misaligned cutouts, especially around the camera and buttons. For long-term use, it's always smarter to invest in a new one.
From our experience, customers instantly notice the difference when their case fits perfectly. It feels more secure, looks cleaner, and gives peace of mind that the phone is truly protected.
Conclusion
The iPhone 12 Pro Max and iPhone 15 Pro Max might share a name, but their differences in size, thickness, and camera layout mean their cases aren't interchangeable. Even the smallest design tweaks can affect how securely a case fits and how well it protects your phone.
Choosing a case made specifically for the iPhone 15 Pro Max ensures perfect alignment, proper button access, and the level of protection your device deserves. For a case that's stylish, durable, and designed to fit like a glove, explore our iPhone 15 Pro Max range at The Dairy and find one that suits your everyday style.
