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Boost Performance & Battery Life on Your Android Device [How-To]

Smart Cleaner : phone cleaner and booster, battery saver app lock, antivirus

Best Free Speed Booster 2017 - Android Memory Cleaner & CPU Task Manager

Best Battery Protection App? - Overcharge/Undercharge Voice Alarm (Android)

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Fast Cleaner & Battery Saver

Double Your Android Phone's Battery Life By Changing These Settings