Google Glass has a built in lithium-ion battery which, like most
smartphones, only lasts through the day if you actively manage your daily usage.
But Glass is dependent on a bluetooth wireless connection to the phone in the
user’s pocket, making its own battery life partially dependent the nature of
that bluetooth connection. And while one might have expected Glass to offer a
better experience with Google’s own Android phones than it does with the iPhone,
the incomplete bluetooth 4.0 implementation in the current Android system
software forces Glass to use more of its own battery power to communicate with
an Android phone throughout the day than with the more bluetooth-advanced
iPhone. That means that, for now, Google Glass has better battery life for an
iPhone user than it does for an Android user.
By the time the finalized retail version of Google Glass ships next year,
both major mobile platforms will have moved on to new versions of their system
software and any battery life disparity may be erased. But for the eight
thousand people selected to use Glass this year as Google continues to develop
its feature set, the news that Glass has significantly longer battery life with
the iPhone than it does with any Android phone comes as a bit of a blowback to
those early testers.
Among the few dozen people who have received their Google Glass units
already, a handful switched from the iPhone to Android for the sole purpose of
getting a better Glass experience. Before long they may end up switching back to
the iPhone, specifically to get more battery life from their Glasses
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