I bought this device in July 2016 . In starting month phone works great no issue in using this phone but as the time goes some issue arises the device not responding many time and restart again and again also most of the application stop responding and takes a lots of time to reopen again . The wrost part about tis device is only 400mb free ram is available so you can not open app smoothly also the device lags a lot its my personal opinion and I am also suggest you to not buy this device as the sound quality is not so good and their customer service not doing their work properly