The upcoming iPhone 20, set to celebrate Apple's 20th anniversary of the iPhone, is rumored to be a game-changer. Mark Gurman of Bloomberg reports that the iPhone 20 will come in two different screen sizes, replacing the iPhone 18 Pro and iPhone 18 Pro Max. This suggests a shift towards more varied sizes, potentially ending the iPhone 19 Pro's existence. The iPhone 20 is expected to feature a unique design with an uninterrupted curved glass display, hiding the metal frame and offering an all-glass appearance. Rumors also hint at an under-display camera and Face ID, solid-state buttons with haptic feedback, a stronger Ceramic Shield, and a 6,000 mAh battery. The phone will run on a new 2 nanometer A21 chip, code-named Naxos, and will power the second-generation Apple foldable, codenamed V78. This foldable model is expected to be updated annually. The iPhone 20's design and features are set to revolutionize the iPhone lineup, marking a significant milestone in Apple's history.