I tried to use their "tethering" plan on my husband's iPhone 3GS so he could share a connection with/to my son's iPod touch so he could watch something on Hulu or Netflix while we were waiting at one of my recent long MD appt's. I figured it was as good a time as any to try it out with antsy kids in a waiting room, and it DID NOT WORK! I would turn on the hotspot, the iPod touch would find & recognize the device (iPhone) by name, then look as though it was going to connect and both devices would drop each other. The iPhone would exit the Personal Hotspot w/o touching anything & the connection indicator on the top status bar of the iPod would disappear & it would quickly exit to the home screen, again w/o anyone touching the device. We tried MANY times and even tried troubleshooting but no dice. I switched that plan back to the 3GB Data Pro Plan TootSweet!! And I used my husband's iPhone to try it and NOT MINE, because I have the coveted UNLIMITED DATA PLAN! I've had it since my 3GS & now with my 4. I jailbroke my 3GS and as I learned how to customize & maximize the potential of my phone, i LOVED all the AWESOME THINGS I could do. One of my favorite things being MyWi. After all the frustration I/we went through trying to get tethering to work to no avail, it ended with extremely frustrated parents and ten times as ornery kids! But I later realized that whole fiasco was a message for me to stop procrastinating and liberate my iPhone 4 already!!