On 2 dec 2015 , I heard a great blast and surprisingly it was from from my phone one plus one . I lost all the trust from this company and their service center guys are not helping me .It is still under the warranty period and asked them for the refund of my money but they directly said no to me . They are not even ready to exchange the mobile phone . I ADVISE ALL THE BUYERS TO THINK BEFORE YOU BUY THIS PHONE AND WATCH THE PHOTOS THAT I'M ATTACHING WITH THIS REVIEW. YOUR LIFE IS PRECIOUS .