I have wireless internet for my pc and the provider has sent out a new modem for free cause the signal to the current modem is going to be dropped in the near future. This new modem comes with a sim card and I'd like to know what the sim card records. They are now going to start charging for data above a certain threshold but I don't think they need a sim card for that. The modem is mobile and I can use it anywhere there is a signal so does that sim card track where the modem is?