I got lenovo k3 note recently. I can say it is a best budget smartphone with all the good features. The style design which attracts the attention and also the battery backup is very good. The only things that dissapoints are the camera clarity and also the user interface.
It takes sometime for the users to explore the features of the phone as it is not that much user friendly. The mobile comes with couple of inbuilt apps which will be helpful to the users. The positive things are long-lasting battery and stylish looks. The negative things are that it is less comfortable to the users in the beginning. Anyway the best smartphone within the budget. No heating problem.