Exhibit 12.1

LEAP WIRELESS INTERNATIONAL, INC.

Computation of Ratio of Earnings to Fixed Charges

(In thousands, except for ratios)

	Predecessor
	Company			Successor Company
				Five Months
	Seven Months			Ended
	Ended July 31			December 31			Year Ended December 31
	2004			2004			2005			2006			2007			2008
Computation of earnings:
Income (loss) before income taxes, cumulative effect of change in accounting principle, minority interests in consolidated subsidiaries and equity in net loss of investee	$	923,544		$	(2,170	)	$	52,331		$	(17,196	)	$	(38,069	)	$	(104,020	)
Fixed charges		14,768			24,622			58,547			106,649			209,132			270,185
Capitalized interest, net of amounts amortized		1,570			—			(8,719	)		(15,861	)		(42,811	)		(49,301	)
Total earnings	$	939,882		$	22,452		$	102,159		$	73,592		$	128,252		$	116,864
Computation of fixed charges:
Interest costs, including amounts capitalized	$	4,195		$	16,594		$	38,784		$	78,047		$	166,785		$	210,952
Estimated interest expense portion of rent expense (1)		10,573			8,028			19,763			28,602			42,347			59,233
Total fixed charges	$	14,768		$	24,622		$	58,547		$	106,649		$	209,132		$	270,185
Ratio of earnings to fixed charges		63.6	x					1.7	x
Deficiency of earnings to fixed charges				$	(2,170	)				$	(33,057	)	$	(80,880	)	$	(153,321	)

(1) One third of rent expense is deemed to be representative of interest.