HTC Evo 4G REVIEWS: What You Need To Know About Sprint's Smartphone

The HTC Evo 4G went on sale Friday at, Sprint retail stores, RadioShack, Best Buy and Walmart. Hailed as a potential iPhone killer, the Evo is the first 4G phone to hit stores.

Engadget reported on queues forming outside Sprint stores in the wee hours of Friday morning.

Built on the Android 2.1 platform, the device starts at $199.99 with a two-year contract and features "industry-leading features" such as 3G and 4G usage, as well as the Evo's ability to create a personal mobile hotspot. Sprint is also offering unlimited data plans with the device; meanwhile, AT&T recently announced that it will no longer offer unlimited data for iPhone.

Its 4.3-inch TFT display, roomy onscreen keyboard, and Google picture search abilities have garnered positive reviews so far. Gizmodo called the HTC Evo it "the Escalade of smartphones." TechCrunch, says it is "the best Android phone yet."

The Evo's limited battery life is a major concern, but TechCrunch has some tips and tricks to extend the battery life.