Disposable cellphones are almost with us. If that sounds ridiculous, think what people would have said a few decades ago if you’d suggested a disposable camera.
More info on how they are made can be found here. Apparently, they’ll be available within a month or so. Some models keep costs down by using speech recognition instead of a keypad and display. They only need to understand a few digits, of course, but this may be the first significant mass-market use of embedded speech recognition technology?