MetroPCS Communications Inc. and Leap Wireless International Inc., the two biggest prepaid mobile-phone carriers in the U.S., are watching the iPhone's booming sales from the sidelines.
Apple Inc.'s device -- the bestselling smartphone at AT&T Inc., Verizon Wireless and Sprint Nextel Corp. -- isn't available from MetroPCS and Leap, which typically offer lower-end models to users who don't want monthly contracts.
Getting locked out of the iPhone market may be taking a toll on prepaid carriers -- an area that's been one of fastest-growing parts of the mobile-phone industry, fueled by young people and lower-income consumers wanting a phone without having to go through a credit check and other hassles. MetroPCS added 82 percent fewer subscribers in the first quarter than a year earlier, while Leap drew 22 percent fewer.
"We are seeing the impact of the iPhone," said Avi Greengart, a research director at Current Analysis in Washington.
The first-quarter results of MetroPCS and Leap, both released in the past 24 hours, sent the stocks tumbling Thursday in U.S. trading. Leap dropped 20 percent to $6.14, the biggest decline since August. MetroPCS decreased 11 percent at $7.08.
MetroPCS, based in Richardson, Texas, netted about 132,000 new customers last quarter, missing a Piper Jaffray Cos. estimate of 350,000. San Diego's Leap added 258,000.
In addition to the decelerating growth, the prepaid carriers have had to step up promotional pricing and rebates, crimping profit more than analysts had anticipated. In contrast, the three carriers -- Verizon, AT&T and Sprint -- all topped analysts' estimates, helped by iPhone sales.
The Apple device made up 78 percent of AT&T's smartphone sales in the first quarter. At Verizon, which added the iPhone to its network more recently, the product accounted for 51 percent. The company relies more on models running Google Inc.'s Android operating system.