Clearing app cache is probably one of the most controversial topics when it comes to maintaining your Android phone. Many people clear app cache instinctively, either to free up additional storage, or — whether true or not — to keep their phone and apps from getting sluggish over time. But there are a lot of questions about the practice, and whether or not it actually does anything useful in the short or long term. Some contend that Android itself should handle app cache all on its own, and that interfering with default caching behavior is just asking for trouble. But the truth is far, far murkier.

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