Exhibit 12.1

Computation of Ratio of Earnings to Fixed Charges

	Year Ended December 31,
(in millions)	2014			2013			2012			2011			2010
Earnings available for fixed charges:
Income (loss) before income taxes and earnings from unconsolidated affiliates	$	461		$	94		$	(6,991	)	$	(4,919	)	$	2,180
Fixed charges	2,377			2,118			1,474			1,487			1,395
Amortization of capitalized interest	35			34			34			31			27
Capitalized interest	(81		)	(5		)	(9		)	(24		)	(35		)
Earnings from non-controlling interests	—			—			—			—			(3		)
Earnings available for fixed charges	$	2,792		$	2,241		$	(5,492	)	$	(3,425	)	$	3,564
Fixed charges:
Interest expense including capitalized interest	$	1,433		$	1,229		$	686		$	694		$	591
Interest portion of rent expense (1)	944			889			788			793			804
Fixed charges	$	2,377		$	2,118		$	1,474		$	1,487		$	1,395
Ratio of earnings to fixed charges (2)	1.17			1.06			—			—			2.55

(1) The portion of operating rental expense that management believes is representative of interest is estimated to be 33%.

(2) Due primarily to T-Mobile’s non-cash impairment charges in the years ended December 31, 2012 and 2011, the ratio coverage was less than 1:1 in each of these periods. The Company would have needed to generate additional earnings of $7 billion and $5 billion in the year ended December 31, 2012 and 2011, respectively, to achieve a coverage of 1:1 in each of these periods.