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There were plenty of rumors about the iPhone 15 Pro and Pro Max going on a diet of sorts this year. Both models are lighter than their predecessors, due to using Titanium over Stainless Steel but not quite as light as was rumored. However, in the hand, it is still lighter than the spec sheet shows.
Why is that? Well, according to Dr Drang, of Lean Crew, the other change Apple made was the reduction in the moment of inertia. That is basically the measurement of an object’s resistance to change in its rotation direction. So when you are using something, the moment of inertia is nearly as significant as mass as it affects the handling of an object. This will depend on the object’s mass as well as the distribution of the mass in relation to the axis of rotation.
With the move to Titanium, the weight is not evenly distributed on the iPhone 15 Pro series. Instead, it is concentrated in the sides. So, the moment of inertia has been reduced, even more than if the weight were distributed evenly.
Basically, this gives you the impression that the iPhone 15 Pro and Pro Max are lighter than they actually are. Which is going to be huge for those that like the Pro Max model.
Titanium is more durable, and lighter
The move to Titanium was a good one for Apple. As it makes the iPhone 15 Pro and iPhone 15 Pro Max more durable, while making the phone lighter. It also looks better than Stainless Steel does. Not to mention the fact that it is the same material that it uses on the Apple Watch Ultra. Albeit not a brushed Titanium look.
Lighter iPhones, more durable iPhones and some incredible cameras. Sounds like a pretty big upgrade this year, even though many would have you believe otherwise.