Besides good call quality, a long battery life is the most important quality a cell phone can have. After all, if you have to carry around your charger for frequent power sessions, it really defeats the purpose of a "mobile" device. Fortunately, CNET tests the talk time battery life of every cell phone that we review. And for higher-end phones we also test features like the music player battery life and video time. For more on that process, check out our video of how we test phones.

Below you'll find a selection of recent models that deliver seven hours or more of talk time battery life. You might be surprised to find a few speakerphones here, but keep in mind that when we test talk time we place a call and then leave the handset alone until the battery depletes. Devices with large, vibrant touch screens can die quicker than basic models (just ask anyone who has an iPhone), but it's really the frequent use of a display that sucks juice. When the display is dim, and you're just making a call, the battery will last much longer.