The OPPO A55 was announced in 2021, October 01 With 6.51 inches, 102.3 cm2 (~82.6% screen-to-body ratio) IPS LCD, 480 nits (typ), 550 nits (peak), Powered by MediaTek MT6765G Helio G35 (12 nm) and running Android 11, ColorOS 11.1, the device delivered smooth performance and multitasking capabilities. while the Li-Po 5000 mAh, non-removable ensured long-lasting usage.