11. I wonder how I got through life without fax machines and portable phones . 12. I misplace the portable phone almost every time I use it. 13. With their designer clothes and portable phones , the newly rich underline the new inequalities. 14. In fact, that spectrum _ 2.4 gigahertz _ is used by some portable phones . 15. The company is spending heavily to increase production of portable phones using CDMA technology. 16. His portable phone rings frequently and he takes orders from all over the country. 17. The battery in Elkins'portable phone went out, then he accidentally shut off the truck. 18. New Jersey-based Lucent makes the infrastructure inside many portable phones . 19. Its door bears a sign designating it a " Portable Phone Free Zone ." 20. And the new portable phones are packed with features that make them more attractive.
