I am using flip-kart from 5 years and I am very happy with flipkart their customer service is very good. one or two times I have received not a good quality product and just communicated with filpkart team. they have taken immediate action and return my product. Most of the time their product quality is good. Every time I have received my product before the expected delivery time. I am using flipkart android application also. I will say if you want to buy any product online then once try flipkart. You will be very happy.