A camera in your cell phone isn't a gimmick anymore. The latest models take pictures at 1.3 megapixels--quadruple the resolution of last year's standard phones--and boast extras like built-in flash and digital zoom. Here's how four hot models from three service providers stack up in hands-on tests, plus tips for all picture takers. --By Maryanne Murray Buechner
Sony Ericsson S710
This sleek handset features a swiveling 2-in. screen. It produced the sharpest, most detailed images of all the phones we tested, and has enough memory to store as many as 300 shots.