One key issue that has been bothering Android users ever since the launch of the OS has been the lack of sufficient battery juice to meet Android's demanding thirst for power. There is no doubt things have improved vastly over time with the current Lollipop as well as the yet to be launched Android M, promising to make things even better. But users will always want more and quickly. So what if you can get a phone that you will run for a whole week without needing to recharge its battery?…
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