Could this turn out to be a wireless case of the tortoise and the hare? According to Ralph de la Vega, that answer is a resounding yes. In his keynote address at CTIA, the AT&T Mobility CEO announced plans to bring a line of thinner, less power-intensive smartphones to its recently launched, true 4G network. How's that possible? Utilizing a technology described as "circuit switch fallback," phones running on the operator's network will make use of a single radio to ride along the LTE waves, and default
