It is possible that the iPhone 15 may return to the design of the iPhone 5c, however, this is not confirmed. Apple has not released any official information about the design of the iPhone 15.
In 2023, it is rumored that the upcoming iPhone model, similar in design to the iPhone 5C, will have a curved back made of titanium and glass. Twitter account ShrimpApplePro has provided some accurate information about Apple’s upcoming product releases. The iPhone 15 is expected to have a similar form factor to the iPhone 5 from five years ago or the current MacBook 14 and 16-inch models. The iPhone 11 was the last iPhone model that was known to bend, whereas the iPhone 15 is expected to have a titanium frame and a glass back.
Apple has registered patents related to using titanium shells for its products, including the MacBook, iPad, and iPhone. Compared to stainless steel, titanium is more durable and resistant to abrasion. Apple is also developing titanium technology to enhance its surface, such as using specialized coatings to increase its resistance to fingerprints.
According to Bloomberg expert Mark Gurman, the iPhone 15 may replace the iPhone 15 Max, but it is unclear whether the iPhone 15 will have a titanium shell or if it will be limited to certain models.
The iPhone 15 is expected to feature four models, two of which will support high-speed USB-C ports. According to Ross Young, the Dynamic Island feature will be available on both the iPhone 15 and 15 Plus models instead of the Pro line. The iPhone 15 Ultra is rumored to have a potential dual selfie camera and a powerful rear camera, with a higher expected price than the iPhone 14 Pro Max.