en.wikipedia.org
en.wikipedia.org
http://en.wikipedia.org/wiki/IPhone
mashable.com
mashable.com
http://mashable.com/category/iphone/
reviews.cnet.com
reviews.cnet.com
http://reviews.cnet.com/iphone/
www.apple.com
www.apple.com
http://www.apple.com/iphone/compare/
www.att.com
www.att.com
http://www.att.com/wireless/iphone/
www.sprint.com
www.sprint.com
http://www.sprint.com/landings/iphone/
www.verizonwireless.com
www.verizonwireless.com
http://www.verizonwireless.com/b2c/device/smartphone/iphone