OPPO F21. pro Whats New ? Let's see Oppo F21 Pro- The Coming Handset Oppo is launching its new smartphone F21 Pro. Build OS. Android 12 OS UI ColorOS 12.1 Dimensions 159.9 x 73.2 x 7.5 mm Weight 175 g SIM Dual Sim, Dual Standby(Nano-SIM) Colors Cosmic Black, Sunset Orange Frequency 2G Band SIM1: GSM 850 / 900 / 1800 / 1900 SIM2: GSM 850 / 900 / 1800 / 1900 3G Band. HSDPA 850 / 900 / 2100 4G Band LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) Processor CPU Octa-core (4 x 2.4 GHz Kryo 265 Gold + 4 x 1.9 GHz Kryo 265 Silver) Chipset. Qualcomm SM6225 Snapdragon 680 4G (6 nm) GPU Adreno 610