Oppo f1s is best phone ever.my friends use this phone and all are very happy.oppo f1s is selfi camera.which is very good.rear camera is very good.design wise very good.awesome build quality.no heating issues I play many high graphics games on this phone like asphalt 8, nove 3, dead trigger 2 etc.perfect tohandle phone and use it one hand.sound quality very good.oppo f1s android user interface is awesome.hd screen pretty good.the best part of this phone is better life.one time you charge and you will get much more time better backup.oppo f1s in nice and budget phone ever.c costumer care are support very well.much more comfortable use this phone.unique design.slim design.