The 2023 iPhone lineup is rumored to include the iPhone SE 4, iPhone 15, iPhone 15 Plus, iPhone 15 Pro and iPhone 15 Pro Max. The SE model will be released in the first half of 2023. Some reports claim that Apple may drop the ‘Max’ branding from its top-tier iPhone 15 series. Therefore, the above device, nicknamed the iPhone 15 Ultra, could hit the market. The iPhone 15 could come with a new frame design. When viewed from the back, the back shells of the iPhone 14, iPhone 13, and iPhone 12 series have square corners. the back of the iPhone 15 series will have rounded corners. The iPhone 14 and 14 Plus have an aluminum frame, and the iPhone 14 Pro and 14 Pro Max have a stainless steel frame. A new leak claims that the iPhone 15 series will be made of titanium. Titanium is more expensive than stainless steel, so it looks like only the iPhone 15 Pro and 15 Pro Max have titanium frames. The iPhone 15 and 15 Plus may have a stainless steel frame. This isn’t the first time we’ve heard of a premium build for the iPhone 15 Pro model. LeaksApplePro also said in his October that the Titan chassis would be featured in the next-generation iPhones. A recent report revealed that all four of his iPhone 15 models will feature a USB Type-C port. However, these devices support the USB 3.2 standard, so only Pro models support high-speed transfers. The iPhone 15 and 15 Plus may only offer USB 2.0 speeds, which matches the speeds available through the Lightning connector. Another report claims that the iPhone 15 Pro model will feature solid-state power and volume buttons instead of physical buttons.