By thinking that ZTE is world class brand, I bought this from online site with cost of some thing around 800INR.Since its price somewhat low, about 200 ruppes compared to other modems, its quality is very poor in the same comparison.Becomes heat within 15 minutes of usage.To remove and insert it is a difficult task, we have to use some safety pins to remove sim.No auto run application provided with this modem.If we want to connect it will take a ZTE homepage which consume a 2mb of data every time.Data statistics are not accurate.their is not calling functionality.Receiving very low speed in 3g coverage.No need to say in 2g mode.Many 7.5Mbps modems works fine but this this is not, it is like 1mbps modem.No extra features.