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A tiny radioactive battery could keep your future phone running for 50 years
(www.techradar.com)
This is a most excellent place for technology news and articles.
You are just moving goalposts here. None of these scenarios are particularly relevant anyway. Even if the phone shell cracked, the battery casing would be enough to shield from the radiation. And what does throwing the phone in the trash have to do with keeping it in your pocket.