You can buy service - as with a prepaid phone -either by calling an 800 number or visiting a Web site.

你可以购买服务——就如预付费电话那样——可以拨打800电话或访问Web网站开通。

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Right now the service only works with certain Citi MasterCards and the Google Prepaid Card and on the Sprint Nexus s 4g phone.

目前这项服务只支持某些类型的“Citi”万事达信用卡和谷歌预付费卡，手机则仅限于斯普林特(Sprint)的Nexus s 4g手机。

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If you feel you are paying too much for cell phone service, switch to a prepaid card.

如果您觉得您付出太多的手机服务，切换到预付卡。

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"We were one of the first in our industry to offer prepaid phone service and continue to see an opportunity to provide customers with easy and accessible wireless service, which is why we've looked to T-Mobile to expand our prepaid handset offerings, " said Jesus Delgado-Jenkins, 7-Eleven's senior vice president of merchandising, marketing and logistics.

ENGADGET: T-Mobile brings prepaid option to 7-Elevens nationwide, doesn't come in Pi?a Colada flavor

The company's Boost Mobile division, which markets prepaid cellular phone service to young consumers using sports- and music-oriented marketing, has seen excellent growth this year.

FORBES: Nextel Presses 'Push-To-Grow' Button

Prepaid mobile phone service is more common in Europe and the rest of the world than it is in the United States, and Euronet provides airtime PINs for more than 100 national and regional networks.

FORBES: Euronet: Prepaid Mobile Phone Mania