I got this AIRTEL 4G HOTSPOT device free beacuse I won a lucky draw and the person from AIRTEL handed me this device at my home.It is the best hotspot device I ever had. Privously I am using modem but that can only be use at home . The best thing about this device is that it is a portable hotspot device. Once it get charged I can take ut to any where. I can use internet in my car or any other place and obviously the network quality of AIRTEL is very good. The charging speed is also good . It is easy to use ; one button for start and one button for turn off.One disadvantage is that I can only use AIRTEL sim in this but although I really like this device