My wife has a Samsung Galaxy S3 that will flash like a flashbulb every couple minutes when it's sitting on the table. I guess this is to let you know where it is in the dark. Anyway, she thinks this might be contributing to her battery drain, and she's probably right. She has tried unsuccessfully to disable this feature. I am smartphone-challenged, but if somebody can give me simple directions, I can probably figure out how to uninstall or disable it.