Samsung Said to Have Begun Testing One UI 8 on Galaxy Z Fold 4 and Galaxy Z Flip 4
Samsung released its Android 16-based One UI 8 operating system (OS) at Galaxy Unpacked 2025 earlier this month. While only the Galaxy Z Fold 7, Galaxy Z Flip 7, and Galaxy Z Flip 7 FE run on the OS out-of-the-box, a tipster suggests that internal testing of the firmware for two older Galaxy devices has begun. Internal test builds of the firmware are said to have been spotted on the server for the Samsung Galaxy Z Fold 4 and the Galaxy Z Flip 4.
