I have used this phone from june 2017 and thia ia the best phone in cheapest price I have also visited ahopa foe other phone too and I havw realiaed that all the features of this phone are provoded in other phones buy coatlier than this. Ao I select this ita bettery back up ia very good and contains 2 gb ram and in this cost they provide 4g also. I have purchsed one more for my parents too. And till now I am not facing any problem