Samsung j7 2016 eddition is most powerfull in this level .it is Released 2016, April with Super AMOLED capacitive touchscreen, 16M colors and 5.5 inches ~ 72.3% screen-to-body ratio.Resolution 720 x 1280 pixels ( ~267 ppi pixel density) .Its runs on Android OS, v6.0.1 ( Marshmallow) .Its has a powerfull processer Octa-core 1.6 GHz .Its more attracting things is camera 13 mp with 1.9 appretaures, Autofocus, led flash with 1080 video recordings.Its Best thing is its battery 3300 mah .Only once a day caharge needed no more charging needed.Its coast is around 15500.Superb phone.I Love it.