According to me iball 21.0 mp wifi ready airway data card is good. because I use it till six months and I don’t have any complain against this dongle. this dongle is really given 3g internet speed. and if I say about the internet speed of this dongle then the internet speed of this dongle is really very good. and the connection reliability is also very good. and if I say about the service and support of this product then yes service and support are also very good. so I can suggest all of you if you want a good dongle then you can go for this option.