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Aluminum is better than titanium for weight and heat dissipation (and the overall better choice for phone material in my opinion).
As for what they’ll say after having recently made a big deal about titanium (assuming the rumor is true), that’s a good question. If I had to bet, I’d bet they’ll say nothing.

Edit- unless it’s some new stronger aluminum alloy, then they’ll probably explain its benefits over titanium and its strength advantage over the previous aluminum.
 
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The thermal properties of aluminum are great. On the flip side, it’ll transfer heat into your hand much better so even though the phone may be running cooler it’ll FEEL hot.

I’ve played around with high end flashlights in different materials and the same driver/battery combo. The aluminum ones always feel hotter than Ti, but they can also run at full power longer before stepping down to a lower power due to heat.
 
Why do you need a reason? Apple only pushed into “premium“ materials because they wanted to justify a jacked up price for iPhone X, but neither stainless steel nor titanium are anywhere near the best choice for the iPhone. Aluminum is above and beyond the best choice for the product both for weight and heat dissipation.

You don’t need a reason. Instead, you should just thank Apple for coming to their senses and returning to the best material for the product.
 
Likely a cost saving. Aluminum is also more easy to machine.
Although what you say is right, I doubt very much that Apple’s going to use it as a public reason to go back to aluminum. They may focus on the much reduced weight, the better thermals, or outright not mentioning the material change. That last one would be quite “Apple”.
 
“Unnecessary tariffs will continue to increase costs for consumers and be detrimental to the economy. So we will continue to find every way to lower our costs to keep consumer prices steady”

problem is, Tim will have to give Trump another piece of glass if he goes down this path.
 
Mother Nature says aluminum takes less carbon to produce.

Then she will hug Tim with her aluminum wand in hand and magically produce the new iPhone for him to share with the world!
 
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They will say they have got a new grade of aluminium that is just as great as the Titanium they were using and thus you don’t lose the benefits of Titanium but gain lighter weight and better thermals etc…
I just know they will have some sort of technical spin to it all.

They will probably try steer away from talking about overall strength and focus on the clear benefits they can prove.
 
Weight.

Titanium is about ~66% heavier than aluminum by volume.
That makes a lot of sense for a handheld device that can be dropped.

Less weight = less energy dissipated on impact = less damage.

I don't disagree, but with that logic plastic is even better (even lighter than aluminum and more flexible/sturdier). Why did Apple start making aluminum devices in the first place? /s
 
Why is there disappointment with aluminum? Cosmetic value when you sell it in a year? My Apple Watch Ultra is titanium but (to me) looks just like an aluminum body, and with about as many tiny nicks as I would expect after three years from either material.

And I agree that heat dissipation would be a logical explanation for the pro, if they offer any explanation.
 
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