Apple is reportedly developing solid-state buttons for its upcoming 20th anniversary iPhone, set to launch next year. The device is anticipated to showcase a quad-curved screen that seamlessly integrates with its sides. According to a report from Chinese tipster Instant Digital, the solid-state buttons have undergone rigorous testing, ensuring functionality in various scenarios, including use with gloves and wet hands, as well as in extreme temperatures. These buttons will be powered by a dedicated low-power chip that provides haptic feedback even when the device is off. Additionally, the iPhone will feature under-display Face ID and a selfie camera, along with a 6,000mAh battery capable of reverse wireless charging. The new model is also expected to incorporate next-gen Ceramic Shield protection for improved scratch resistance and will eliminate the traditional physical earpiece, opting instead for under-display sound technology. This innovation reflects Apple's commitment to enhancing user experience and design aesthetics.