Hello folks, I bought this Dell inspiron 15 3521 laptop a year and half ago and it was 4 GB RAM with 500 GB Hard disk.It looked pretty good to me in the initial days when the device was under warranty i.e starting one year.It has pretty good keyboard and also Numpad is available unlike the devices now-a-days which dont have.Its performance was good for normal users like not much multitasking and no heavy games played.
But if you are the guy who uses the laptop heavily and open multiple windows then it lags, i mean device becomes slow.Even I had the issues with wifi driver but when my device was warranty customer care supported.But now I am facing the same issue again.The device is user friendly.Even the battery backup was not that great and even it got damaged recently and I had to buy a new one.