Apparently it may be possible to be too thin; see the rest of the review for positive Droid Razr attributes
The Droid Razr has just one major flaw. Its fast processor and 4G system really hammer the battery. After a half-day of Web surfing, e-mailing, and the occasional video, the phone was nearly exhausted. And unlike most Androids, the Razr’s battery is built-in and can’t be swapped. A thicker high-capacity battery might save the day, but then the phone wouldn’t be a Razr, would it?
Motorola’s betting that style-conscious consumers will gladly sacrifice a few hours of talk time in exchange for the Droid Razr’s advanced technology and finely honed physique. I’m betting they’re right.