Samsung Galaxy S II, Motorola Atrix 2, Motorola Droid Bionic and etc are among be smartphones with best battery life 2012.
Samsung Galaxy S II (AT&T)
The Samsung Galaxy S II is named AT&T's top Android smartphone thanks to combination of a state-of-the-art dual-core processor with a terrific screen and amazing battery life. The AT&T SGSII comes with a 1650 mAh battery which is above average and will last most users more than the average work day. In addition, the Samsung Galaxy S II boasts a beautiful display and a thin design. Running on Android 2.3.4 and a dual-core processor, the Gingerbread device delivers fast performance with excellent battery life and good camera.
Continuous talk time: 11 hours 7 minutes
Motorola Atrix 2 (AT&T)
The Motorola Atrix 2 comes with a 1785MAH battery from the Factory which is able to keep the phone powered all day.
Continuous talk time: 10 hours 43 minutes
Motorola Droid Bionic (Verizon Wireless)
Thanks to powerful processor, speedy LTE modem and Lithium-ion based battery HLI-XT875SL, Motorola Droid Bionic provides 10 hours 35 minutes of continuous talk time
Motorola Droid 3 (Verizon Wireless)
Motorola Droid 3, the world’s thinnest full QWERTY Smartphone with core 1 GHz processor for fast multi-tasking and smooth multimedia viewing, boosts 9 hours 53 minutes of continuous talk time
Pantech Breakout (Verizon Wireless)
In addition of having a very generous address book, Bluetooth, texting and multimedia messaging, Wi-Fi, Google services, music player and many other interesting ones, the midrange smartphone Pantech Breakout provides 5.8 hours of talk time and 12.6 days in standby
Samsung Galaxy S II Epic 4G Touch (Sprint)
The Samsung Galaxy S II Epic 4G Touch, the top Android choice for Sprint, is powered with a rich, gorgeous screen, a speedy dual-core processor and 8 hours 48 minutes continuous talk time
Motorola Photon 4G (Sprint)
The The Motorola Photon 4G is made perfect with excellent battery life, at 8 hours and 20 minutes of 3G talk time
T-Mobile myTouch 4G
The T-Mobile myTouch 4G ships with great softwares and a new extended battery HLI-PG59100XL which extends standard battery life more than twice
The longest battery life for android phones