How to Speed Up a Sluggish Android Smartphone

One of the disadvantages of retaining a phone after the expiration of a two-year contract -- as many of us do -- is that those older phones have accumulated a few years' worth of digital gunk. They're clogged up like an aging sewer on the wrong side of town. Just like on a PC, bits of app and OS code become discombobulated -- orphaned from the parent program. Onboard digital debris becomes disoriented like a drunk stumbling out of a favored hole-in-the-wall; jumbled lethargy sets in, and the device can take forever to start.