Personally, I don't see the point, either. I mean, right now, I pay ONE monthly access fee and can use that data stream on either my N95 or my N810 (tethered to the N95). That's HSDPA, and as was pointed out, falls back to EDGE, which means that for one price I have what's basically a nationwide coverage area. With WiMax (the same argument could be used against adding a SIM slot to the Tablets) I now have to pay for ANOTHER data access point. I highly doubt that I'll be able to use the same data stream on my cellphone AND my Tablet. Also, I'm now limited to the WiMax carriers (being Sprint and Clearwire, basically), whereas with BT tethering, I could use AT&T for HSDPA, Sprint for EV-DO Rev A, Verizon for EV-DO, or whoever else.