Samsung Galaxy S7 Onyx comes in black colour which adds up to the elegant and stylish looks of this smartphone.The mainstay of this Samsung device is its RAM of incredible 4GB, the performance of the system is totally free from all the interruptions and gives a seamless staging of all the applications along with superb multi-tasking.Another amazing attribute is its battery of 3000mAh which clocks up for a long time on just a single complete charging.