Hi friends, I had been used the LYF Wind 4s mobile when it arrived new at the market. This mobile was good for using and worked good for few months and this mobile has the 4G sim supported mobile. For few months the mobile was soo good and smooth usage. This mibike has 2GB RAM and 16 GB internal memory. It supports a expandable storage upto 128 GB sd card. This mobiles started showing its problems after few months. It strated hanging and the sim network doesn’t working properly. The internet speed is reduced and it works like a 3G mobile. And the I can’t play games when I open the games it starts hanging and stops working. The battery capacity is 4000 mah but it works as a 2500 mah battery after few months of usage. It has a 8 mp rear camera with flash and 5 mp front camera. The quality of images is average according to mobiles price. It has aprocessor of 1.3 GHz quad core processor with a android version of 5.1 lollipop. The perfomance of the mobile is too bad after few months of usage. So friends you can go for better mobile than this. Thank you friends.