Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A cell phone that includes features of a PDA, such as applications for reading and sending e-mail, maintaining a calendar, and browsing the web.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A mobile phone with more advanced features and greater computing capacity than a featurephone.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From smart +‎ phone.

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Examples

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  • A mobile phone with some computer applications (notably e-mail and Web browsing). The iPhone and BlackBerry are two popular units.

    January 7, 2009

  • My cordless home phone with no message service is so smart that after 4 rings it promptly ceases the ringy-dingy because it knows that I won't pick it up unless I recognize the caller-ID number.

    January 7, 2009

  • My cordless phone has many buttons of which I don't know what they do.

    January 7, 2009