05
Jan
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AT&T has been keeping very quiet about its 4G plans over the past year, letting the other 3 major players freely roll out their respective 4G technologies - HSPA+ for T-Mobile, WiMax for Sprint, and LTE for Verizon. However, after the announcements at this morning's AT&T Developer Summit, it is clear AT&T is seriously stepping up its game.

According to Ralph de La Vega, AT&T's CEO, AT&T has already completed the upgrade of the whole mobile broadband network to HSPA+, or Evolved HSPA, which is the same technology used by T-Mobile that currently offers theoretical speeds of about 21Mbps downstream.

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