Definition of "postpaid" [post•paid]

• With the postage having been paid in advance. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Although AT&T is touting its lead in postpaid smartphone subscribers, the carrier is just now taking steps to gain a better foothold in the prepaid market, an area where rivals have a head start."
• "The price of it in limp cloth covers, postpaid, is ten cents."
• "Long-term postpaid monthly subscriptions will be used by fewer than 40% of all mobile broadband users."