Exposure of Apple iPhone 15 / Pro series with titanium alloy body + curved back frame

Apple’s 2023 iPhone 15 / Pro series will use a titanium alloy body and replace the existing straight-edge design with a curved back frame.

According to Twitter user @ShrimpApplePro, the back bezels of the iPhone 15 will be rounded to form new bezels, similar to the bottom edges of the casings on Apple's latest 14-inch and 16-inch MacBook Pro models. It could also look like the back of the iPhone 5C. For reference, the iPhone 14 models feature a straight-edged design with straight edges, similar to the iPhone 4. The last model with curved bezels was the iPhone 11.

Despite the switch to titanium alloy materials, the iPhone 15 still uses the back glass. The source also said that this is early information, and it is not ruled out that there may be changes in the later period.

This isn't the first time we've heard rumors claiming that Apple will release a titanium version of the iPhone. Earlier this year, it was rumored that the iPhone 14 Pro and iPhone 14 Pro Max would have titanium frames, but that didn't materialize. The bodies of all iPhone 14 series models are made of aluminum and stainless steel.

However, Apple recently investigated the feasibility of using titanium alloy casings for its products, including patents related to future MacBooks, iPads, and iPhones using a machined titanium alloy with unique properties.

Compared to stainless steel, titanium's relatively high hardness makes it more resistant to scratches, and its hardness makes it durable enough to withstand bending.

However, titanium's strength also makes it difficult to etch, so Apple has developed sandblasting etching, and chemical processes that give titanium casings a high-gloss finish that gives them a more attractive appearance. Apple has also been investigating the use of a thin oxide surface coating, which could reduce the appearance of oily fingerprints.

If the latest revelations are accurate, it will be the first time Apple has used titanium in iPhones and iPads. Apple uses titanium as the casing material in models such as the latest Apple Watch Ultra, and the physical Apple Card credit card is also made of titanium, but the latest iPhone and iPad are still made of stainless steel and aluminum.

Apple’s iPhone 15 series models may be released in September 2023, which are expected to be the same size as the iPhone 14 series, and use USB-C instead of the Lightning interface, solid-state volume, and power buttons, new camera technology, and All models support Smart Island.

According to Bloomberg's Mark Gurman, Apple may replace the "Pro Max" version of the iPhone 15 with a new "Ultra" model, following the naming convention of the Apple Watch Ultra to denote the highest-end product. It's unclear, however, whether the titanium case rumors are tied to a specific iPhone 15 model.

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