This will enable you to save battery life and improve your device’s performance. SetCPU offers a huge range of ways to tweak your CPU, including profiles, clock speed, voltage settings, etc. More importantly, the app gets regular updates which constantly improves its features. You can experiment with overclocking your old phone. Similarly Lowering the clock speed of a processor has its own advantages. It can save battery life, although the performance of some high-end applications will decrease. For some devices, the app also allows you to tweak the phone’s voltage to preserve your battery. You will need to set up a Profile to run your CPU at half speed when your battery runs low and set up another profile to keep it at the maximum when your phone is charging or docked.
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Requires Android 4.0+