I was using this device some time back and I could use it only for 2 months. It was so troublesome that I had to sell such a costly device at half the cost, but I was a relieved man. Actually, the smartphone is so unoptimized that it slows down terrible and even the camera takes so long to open that it will get to your nerves. I think it is due to its inefficient Snapdragon chipset that offers really terrible performance. But overall, I think it costs way too high and should have been much more affordable. I would not suggest anyone to buy this smartphone.