Oppo f1 is the best handset of nowadays. Its full with specifications that cant be imagined in such a low prices. It have 3GB DDR RAM, 2500 MAh battery, 16GB internal memory etc.
But some specification like its camera is the best. Its compared with both Samsung galaxy s7 and iphone 6sboth front and rear both fsiled in front of oppo.
Even it have a feature of calling with your mobile net when there is no balnce in your sim which is its another best specification. Most cheap and best phone it is.