A 4G phone guaranteed to get your student through a full day of classes—and a party or two—the Droid RAZR Maxx has the largest capacity battery of any smartphone. On our tests, this Android handset lasted nearly 8.5 hours straight Web surfing. All of this endurance comes in a package that’s only 0.35 inches thin. And with the built-in Color for Facebook app, they can broadcast 30 seconds of footage to all of their friends at once.

Read Our Motorola Droid RAZR Maxx (Verizon Wireless) Review