I bough this Moden From Amazon.in on January, 2017D-link DWP 157 3G Modem 21mbps internet speed . But why not for me? It only shows in the specification of the product that the Modem has the speed of 21mbps but I never experience the speed which said by the company even I never get the internet speed up-to 28kbps . this 3G product do not support 3G even not providing the genuine 2G speed also . If you connect the modem with your PC is shows always 2G network. This product is now garbage for me and also I could not sale this product to any of my friends cause no one would like to purchase this garbage. There was my bad luck when I decided to purchase the D-Link 157 3G Modem . I also Lost money when I recharged my Airtel 3G plan For Rs.880 for using the service with this modem but unfortunately the modem Not supports 3G that’s why my Rs.880 is also waste for this poor product .Overall this was my very bad experience with this poor performed modem . This can never give the right value of your money . Do Not buy the Waste one . there are many online internet routers are available to purchase in the online shopping sites Under Rs.10, 000 . I highly recommend JioFi which is the best product now a days in my point of view . I am also using this.