found:Wikipedia, Aug. 6, 2007(smartphone: full-featured mobile phone with personal computer like functionality; most are cellphones that support full featured email capabilities with the functionality of a complete personal organizer; can be noted by several features which include, but are not limited to, touchscreen, operating system, and tethered modem capabilities on top of the default phone characteristics)
found:MobileTechReview WWW Home page, Aug. 6, 2007(Smartphone: Palm OS martphones, Pocket PC Phone Edition Models, BlackBerry, MS Smartphone)
found:CNET reviews Home page, Aug. 6, 207(smart phones)
found:Google search, May 4, 2011:(1,070,000 hits on "smart cell phones")