The mandatory period of silence for 700MHz auction participants is over, so AT&T is revealing what's up their sleeve for the prem-o slice of spectrum on a conference call. AT&T Mobility CEO Ralph de la Vega said that it'll give them more flexibility and bandwidth to handle surging demand for mobile broadband now and later; better coverage (like in buildings, thanks to the spectrum's sweet properties); and an "easier path to 4G technology," that being LTE (which Verizon is also in on). They'll primarily be using 700MHz for their LTE network, and since it's GSM based, 4G devices will be able to work in 2G and 3G areas.
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