Best Handset of Freedom?

Father Thomas Dowd writes: "The images we are seeing of Iran are being captured on cell phones, the text is being twittered over SMS. Still, the government has some control the networks, and we are all familiar with fears of wiretap etc. technologies to spy on users. If cell phone is the new tool of freedom, what would the best "freedom handset" contain? I'm thinking a device with an open OS, where each phone could be itself a router for encrypted messages passed through Bluetooth/WiFi/whatever, thereby totally bypassing physical infrastructures when necessary. Of course, some sort of plausible deniability encryption a la Truecrypt would also be good, in case the secret police catch you with your phone. What else might we need?"