Hi, I have used the Lenovo K3 note mobile for one year specifically but it tortured me a lot, It is not too much user friendly to work on with, for 3 or four months it works goods, afterwards it started to hang not supporting like other mobile which released in the market at that time.Cons: battery back up weak( fast Draining) hangs regurarly when in useScreen Touch not too Supportiveheating Issue when we play graphic interface games.