“Share” is Android’s most powerful option: the ability to shuttle text or images or documents between apps. It’s also a feature that is not quite apparent, or at least fully known, to those who haven’t spent a lot of time with an Android device, or who don’t love digging through buttons and settings. It’s the paradox of choice in the palm of your hand. But it could be far more powerful if it was made consistent, more clear, and customized.