The OPPO Reno 4 was announced in 2020, July 29 With 6.4 inches, 98.9 cm2 (~83.5% screen-to-body ratio) OLED, 430 nits (typ), Powered by Qualcomm SM7125 Snapdragon 720G (8 nm) and running Android 10, ColorOS 7.2, the device delivered smooth performance and multitasking capabilities. while the Li-Po 4015 mAh, non-removable ensured long-lasting usage.