I purchased 4 days ago oppo f1s.13mp camera quality is good with 1080 resolution.5.5 inch display is sufficient to watch video and playing games.4gb ram its fantastic, for when I played very high resolution games.Battery backup so so, when I continue using internet its time 4-5 hours.doesn’t matter its happening with all.one thing is good that I can’t take extra memory card immediately because of 32 gb internal memory inbuilt in this phone.The crorning gorilla glass 4 used in this phone, Octa core 1.5 ghz processor.Android 5.1 lolipop .Its fine with the price of this phone .