Every when I was reached to the office I saw that every body talking about wechat, whatsapp, viber ec, So one day I just asked to one of my official friend that every day when I was came to the office you all are talking about wechat whatspp etc, so he asked me that you just buy a new android phone after that you also know everything, so after a week I just buy new YU Yuphoria android phone and then I know about all of this, this phone have so many advanced featured, it has 2 GM RAM, 16GB ROM and 8MPback camera and 5MP front camera, also have 2250 MAH battery, and looking wise this is so nicephone, I just buy this phone in 7999 from Amazon.com. I am fully satisfied with this phone.