Xperia Play 2 prototype makes you wish Sony never gave up

Perhaps even more than Samsung, Sony has a handful of businesses it could tap to improve its smartphones. It had display, imaging, entertainment, and gaming chops but, for one reason or another, including infighting and sibling rivalry, it never fully exploited those avenues. Once upon a time, however, it did dare with the Sony Ericsson Xperia Play. That popular “PlayStation …