I have had a Lenovo A6010(black) for some time and it is not a phone that I could recommend to buyers.
First and foremost reason is its heating problem. It really heats up faster than most phones. I even had moments where the phone heats really high that I had to turn it off, remove the battery, and wait for a considerable amount of time before turning it on again. I even had this situation where it heated really bad that I had to place it in the freezer. Thank goodness that it did not explode.
Second, it is a very slow phone. Imagine the hassle it gives on a busy day with lots of tasks to accomplish with only 1 gb RAM and 1.2 GHz CPU.
Third, the style and design is not compelling. With its plastic feel and simple design, one could scan a set of smartphones and wouldnt look back or take a second glance on this phone.
This phone is something that I would not recommend, but if youre out of budget, then its your decision.