Oppo F1s is not very good, useful & convincing phone for the customers compare to other companies phone which comes in the same range of price as Oppo F1s. Oppo is known to be a stylishly design selfie camera phone & the phone gives justice to that statement as well but that is all about it because apart from that the phone has almost no battery backup, the sound quality of the phone is also very poor.
The phone heats very fastly even after using for a very less time. The phone hangs in between calls and also after using for a whole day the phone starts having problem like in between doing important work suddenly phone gets shut down & shut open at the same time.
Overall the phone has more of a disadvantage than advantange. So, if you want to buy than I would suggest you first check & analyse the phone quality yourself & if u still want to buy than go for it on ur own risk.