I recently have bought an airtel dongle and its my favourite however I am facing few issues. the first issue is the connection often gets disconnected without any warnings and it made me so fruatrating many times. it happened many times when I was downloading. I really appreciate the speed airtel provides. its really competing with other service providers. the only thing I would say about this is the reliability issue. if you are planning to buy this for personal use its right for you., however if ur aim is to setup this to a company like infrastructure then I dont recommend this to such scenarios. I really would appreciate if airtel can solve the reliability problem. connection gets disconnected mostly when u download bigger files.