Just what does AT&T plan on doing with all that 700Mhz B-Block spectrum (from the 700Mhz FCC auction) and that valuable swath of 700Mhz C-Block spectrum (from Aloha Partners)? It looks like AT&T is going to use the fresh-off-the-grill spectrum to launch its own 4G LTE mobile broadband network.The additional spectrum firmly plants AT&T at [...]