As cell phones--with ever-expanding possibilities of texting, Web browsing, and game playing--have multiplied in recent years among teenagers and even preteens, so have the concerns of teachers and administrators about the distractions these devices can cause. A survey of students and parents earlier this year by the group Common Sense Media found that almost 70% of schools around the country ban student cell phone use during the school day. But some districts and administrators are realizing the untapped potential of cell phones. It's part of an "anytime, anywhere" learning movement that leaves laptops and even smaller netbooks behind, proponents say, in favor of more mobile, affordable and reliable handheld devices--from "smartphones," which can run operating systems such as Windows Mobile and a host of software, to iPods, known more for playing audio and video, but adaptable to more interactive applications through new educational platforms. The author discusses how advances in mobile technologies are showing enormous untapped educational potential for today's generation. The author presents some examples of current district cell phone programs that turn mobile devices into miniature classroom computers.