I have used this smartphone and it is the best.No problem in this smartphone, no heating issue.It is a well made speedy, handsome smartphone.Its gaming features are excellent.Smartphone specially made for gaming purpose.Photos comes very good which we click from this smartphone ( 13mp rear camera) .Selfies also comes good.( 5mp back) .Processor speed is good( snapdragon 410) .Battery life is also good( 2600 mAH Li-ion) .It’s display also better ( Super AMOLED capacitive toucbscreen, 16M colors) .Android version 5.1 Lollipop and it can be upgraded to v6.0.1( marshmallow) .RAM is 1.5gb.It has autofocus feature.Good phone buy this Samsung smartphone.