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Study: free apps drain 75 percent more power, badly built advertising to blame

A research team from Purdue University found that nearly three quarters of the power used when you run a free app, like Angry Birds, is actually used for advertisements. Project leader Abhinav Pathak lays the blame at the feet of poorly coded apps that need to be made significantly more efficient. They suggest that until a solution is found, you can significantly increase battery efficiency by turning off functions like GPS and Wifi when playing gaming apps.

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