Oppo f1s is good cell phone it’s usefull in office, in india most of people are using oppo f1s becouse it is good and usefull, full hd, good music voice, good selfie shot???? and good screenshots. And battery backup has decreased but rest everything is going well and good .perfect smartphone as I wish to have. Amazing phone.been using it from 9 months. Gives a great battery life, no heating issues while playing games and video callings so nice.will be a good investment for buyer like me feel free to buy. Trust me