So I was reading through some more of the older posts in this thread, and I see that most of the stuff I mentioned was talked about in one form or another (sorry). So, ..this is more of a question to all of you out there who are more in the know than me about this stuff. I was a couple of posts going back and forth about whether or not to include a SIM slot and and a HSDPA/3.5G chipset. The question I have: how is including WiMax better than including a 3.5G chipset? And when I say better I mean from the standpoint of not being tied to a single provider and all of the regulatory (FCC) hoops that have to be jumped through to include it. If I understand how it currently stands (please correct me if I'm wrong about this) Sprint is the only carrier/provider interested in developing WiMax, with both AT&T and Verizon going LTE (though at different frequencies) to fulfill their 4G network ambitions. With regards to battery life...WiFi/WiMax uses less than 3.5G? (Honestly asking!) So if I were to turn the GSM radio in my N96 (hypothetically speaking of course, since neither I nor anyone else has one) off and proceed to browse/VOIP/whatever just over WiFi, I'd get longer battery life than if I did the converse (WiFi off, GSM on)? And to forestall flamethrowage, I'm not advocating either or, just seeking enlightenment!