-> oppo f1s is an upgraded F1 with 16-megapixel selfie camera.
-> Design and looks really good .who loves iphone and not able to buy iphone for that people oppo f1s is best.
-> Display of mobile is 5.5 inch IPS and brightness level better then F1.
oppo has gone with mediatek’s octacore with features eight ARM cortex running at 1.5Ghz.
-> oppo f1s have fingerprint sensor is quick.
-> performance is good.including 3D games, 4G connectivity .
-> front camera is 16 Megapixel and rear camera is 12 megapixel.so mobile have best camera features.
-> battery life is same as F1. charging problem are there, mobile having slow charging otherwise mobile have good quality.
->i hope my suggestion help you to select a best mobile.>