Epic 4G with firmware 2.3.6 Gingerbread FC09. i simply plugged a usb cable to phone, it asked if i wanted to charge etc and I chose tethering. My laptop updated itself, Win7, and it is working. Is there anything I need to know once I use 3G/4G? I am currently using the phone as WiFi only as the phone doesnt work in my home. So, it is not on my Sprint bill anymore. But, when I move it will go back on the spring unlimited plan, and will have 3/4G. Will tethering work as it is right now? The phone is getting its data from my rooms wifi, then the usb cable is tethered to my laptop.