Voice-recognition correction: Using Vlingo’s voice-recognition interface, a user can speak a sentence into a cell phone, see that sentence (in this case the text message “Hey Andy how’s it going”) appear on a screen, and use simple editing tools to replace words that may have been misinterpreted by voice-recognition technology. The interface helps users avoid manual entry of text messages, search terms, and e-mails. Credit: Vlingo

Mobile phones can do lots of things: search the Web, download music, send e‑mail. But the vast ­majori­ty of the 233 million Americans who own them never use them for more than calls and short text messages. One reason is that other features often require users to enter sentences or long search terms, a tedious task.

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