This update decision comes as a surprise. Updated on Dec. 6 with a more detailed Android threat assessment and the news that Google has issued attack warnings for targeted users around the world.

Consider these 12 expert-approved tips and tricks to make your device last up to hours longer - no matter what model or brand you own.

Forbes contributors publish independent expert analyses and insights. Zak Doffman writes about security, surveillance and privacy. Per SammyFans, this “surprise” is for users of the company’s newest ...