Why buy an Oppo F9 mobile? Oppo R17 Pro is Available in 64GB of internal storage which is expandable up to 256GB of storage through Sd card. Oppo F9 comes with the camera of 16MP (f/1.8) and 2Mp (f/2.4) on the rear and secondary camera of 6 Mp which is selfie shooter,6.3 inches of a display with the resolution of 1080*2340 pixels, super-fast charge 3500 mAh battery.