I am just wondering, in your guys settings, wireless & network, in mobile networks under network mode, did it just say GSM only, WCDMA only, GSM & WCDMA only? is there no HSPA? or HSDPA?? Because before, I had the same choices on desire but it does not run of tmobile's 3g network because i think the frequency is different. But on sensation it is 900/AWS/2100 so it should run it, but why is the network mode same?