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With their 1-GHz (or faster) processors and 4G data speeds, smart phones become more and more powerful–or more power hungry. specs and apps matter, but what good are they if you’re hunting for an outlet by lunchtime? If you want a smart phone that endures, check out the handsets list. These devices lasted at least 6.5 hours on the LAPTOP Battery Test, which involves continuous web surfing over 3G/4G on 40 percent brightness. The average smart phone lasts 5 hours and 24 minutes on this test list.
A speedy data connection and lots of entertainment options make Samsung Galaxy S 4G an excellent choice for T-Mobile customers. Battery Life Score: 7:05.
Apple's best-in-class design and superior apps paired with Verizon's strong 3G network make for a stellar combination. The battery Life Score of iPhone 4 (Verizon): 7:27.
Sprint's most affordable 4G phone yet packs a good physical keyboard and smart software into a compact design. The HTC Shift 4G (Sprint) battery Life Score: 6:51.
An impressively durable design, high-res display, and solid performance make Motorola Defy at just $99. Battery Life Score: 6:52.
A sleeker design, more comfortable keyboard, and mobile hotspot functionality make Motorola Droid 2 Global a pretty strong sequel. Battery Life Score: 7:07
Motorola’s supersized Droid has a gigantic display, excellent touch keyboard, and an impressive high-def camcorder with HDMI output. Battery Life Score: 7:42
Thanks to a best-in class keyboard and fast data speeds, the Sidekick 4G is one of the best value-priced smart phones for any carrier. Battery Life Score: 7:32
