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How can I give a CPU wakelock to an app so that It can work even when the screen is off?

(Usually android halts CPU too, when screen is off)

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  • Apps get wakelocks programmatically using PowerManager APIs. You can acquire and release a wakelock manually by writing a string to /sys/power/wake_lock and /sys/power/wake_unlock respectively. – Irfan Latif Mar 19 '19 at 4:52
  • @IrfanLatif Thank you! :) That's the answer, though I don't have root :( – KYHSGeekCode Mar 19 '19 at 8:08
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If you don't have root access in your phone, there are many apps in the Play Store which can take a partial wake lock. Just start the app manually when you need it. Because, if one app takes a partial wake lock, other apps can also take the advantage.

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  • Thanks, I didn't know that the wakelock affects other apps too. and I don't have root :) – KYHSGeekCode Mar 19 '19 at 8:09

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