I want to use my Orange San Francisco for tethering. It is one of the earlier models, with the OLED screen. I have already rooted it and not using the Orange software. There a few questions I want to ask. Can it work as a normal modem (is that the same of tethering)? Is the software already built in? What is the modem speed, how can I check the connection speed with my provider? Is the 3 network a good one to use it on?