iPhone Duo has huge black bezels all around the screen.

Digital bloggers such as Media Storm and He Tongxue found in hands-on tests that after the new device unfolds its 7.6-inch large screen, WeChat can only be displayed in the center, leaving large black bars on both sides, directly wasting half of the entire large screen. According to He Tongxue's count, as many as 80% of commonly used apps have not been properly adapted; some are barely stretched, while others simply remain unchanged, greatly diminishing the large-screen experience.