Leap Wireless LEAP.O, which agreed to be bought by AT&T Inc (T.N) last month, reported a bigger quarterly loss as it lost subscribers.
The company's net loss attributable to common shareholders increased to $163.1 million, or $2.09 per share, in the second quarter, from $41.59 million, or 54 cents per share, a year ago.
Revenue fell to $731.5 million from $786.77 million.
The mobile network operator targets cost-conscious consumers who pay for calls in advance.
(Reporting by Neha Alawadhi in Bangalore; Editing by Maju Samuel)