If you want to try this update but are hesitant because you've noticed your Android phone or tablet already feels too sluggish, clearing app and browser caches can give it a fresh boost and free up some storage space. Also: The best Android phones to buy in 2025 Over time, cached data can accumulate, become corrupted, or simply get outdated, which may slow down your device. Restarting your phone often helps, but a targeted cache-clear is a quick way to boost responsiveness without upgrading hardware.