The iPhone 4S's battery life span is high relative to many other phones in our sample, but the Samsung Epic Touch 4G is the clear winner.
The Nokia Lumia 800 and 710 are powered by a 1.4GHz single-core processor and run the latest version of Windows Phone 7.
The Galaxy Nexus has a 4.65-inch display, LTE/HSPA+ support, a 1.2GHz dual-core processor, and--of course--the latest version of Android.
At BlackBerry DevCon in San Francisco, RIM says that future tablets and BlackBerry phones will have the same operating system.
Nokia puts its phones through rigorous testing before they land in customers' hands. We had the opportunity to take a tour of the Nokia Test Center, just outside of San Diego, and witness some of these tests.
The Google and Samsung event was supposed to happen this week at CTIA in San Diego, but now will happen next week on Tuesday evening (U.S. time).