Ralph de la Vega will now oversee the integration of the mobile and enterprise units, while Glenn Lurie will head the consumer mobile business.
AT&T installed a 130-foot interactive LED "fan experience board" in its namesake sports arena in Dallas.
In statement to FCC, firm says without deal neither company can compete against rival cable giants.
Joining the carrier's ranks is a new hot spot we hope to see much more of at CES.
"If I cannot make money on handsets, I will not be in the handset business," John Chen tells Reuters.
At CES 2014, Asus unveiled its smaller PadFone Mini unit, which features a 4-inch handset and 7-inch tablet.
Pricing not available
Outfitted with a 6.3-inch screen, the smartphone will be carried by AT&T, Sprint, and U.S. Cellular. AT&T will get things rolling with the Mega this Friday.
"This is our best iPhone launch yet," CEO Tim Cook says of record-setting weekend sales. Plus: more than 200 million devices are now running the new iOS 7.
The latest phone from Apple sets a record, as sales worldwide for the first three days double those for its predecessor, the iPhone 4.
The telecom company will launch in eight markets in March, and roll out to 50 markets by the end of the year.