The billing charges and the level of data absorption by the Verizon Hot Spot is uncontrollable. If you use or have this device, then you are probably watching your money fly right out the window. There is no way that I know of to monitor or conveniently control its operation efficiently. When I went to the Verizon store, the representative told me that many computers are always streaming data, i.e., the data flow is uncontrollable. I have also noticed that the on/off switch is tricky. It can be on, when you think it is off. I have solved this problem, by disconnecting the battery and the power source when not in use. In any case, I was advised to buy the data level packages which I did. I am up to 10 gigabytes which is crazy because I don't use the computer more than an hours or two a day. This is costing me about $125 a month. I can get an entire cable package with telephone, cable, and internet each month for less than that. Verizon better fiqure out a way to package this service more economically because, I am not sure how many people will want to pay so much!