I received a comment on my previous post on The Android HT, pointing to this Android mobile phone plus UHF transceiver: Runbo X5. This is not quite what I described as the Android HT but this device is certainly interesting just the same.
Runbo X5 Android Phone with UHF Radio
Looking around on the web, I found this set of specifications. The frequency range for the “walkie-talky” function is listed as 400 to 470 MHz. The power output is not specified, but the UHF range is listed as 5 km. Some of the photos show a rubber duck antenna while others do not, so I suspect that the UHF antenna is removable.
Of course, the Android HT that I described was amateur radio only, no mobile phone capability included.
73, Bob K0NR
8 Dec 2012 Update: I just noticed that PD0AC highlighted a similar product on his blog, the OutFone BD-351-A83.