Hi. I am trying to activate my older Panasonic Toughbook laptop, EV-DO REV. A. ESN# [Removed]. When I add it through the "bring your own device" page, the subtotals show $0 for monthly charges. It does show that it would require a $125 deposit today, however the subtotal for monthly charges being zero makes me not want to check out, because it looks like it's not really working. Any assistance appreciated.