The iPhone 15 Pro and Pro Max are expected to look similar to the iPhone 14 Pro and Pro Max, with 6.1 and 6.7-inch OLED displays and a Dynamic Island cutout for the camera and Face ID hardware.There have been rumors of some tweaks to the chassis of the two Pro models. Leaker ShrimpApplePro has said that the iPhone 15 Pro models could feature thinner, curved bezels compared to the iPhone 14 Pro models. The displays would remain flat despite the slimmer, curved edges, a design likened to the Apple Watch Series 7 and Series 8.Titanium ChassisInstead of stainless steel, rumors suggest that Apple will transition to titanium this year, using it for the frame of the iPhone 15 Pro and Pro Max. Compared to stainless steel, titanium is lighter and stronger, but it is also more expensive because it is harder to work with.Presuming no other major changes in terms of internal components, an iPhone constructed with a titanium frame will be lighter than an iPhone with a stainless steel frame, so it is likely that the 15 Pro and Pro Max will be lighter than their iPhone 14 Pro predecessors. Weight will ultimately be determined by the alloy that Apple uses, as the devices won’t be made from pure titanium.