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I noticed my smartphone is very slow, for abou 2 minutes, after i unlock the screen, after i left it charging while i went to sleep.

Then suddenly, everything becomes fast again. All apps, that were behaving sluggish, suddenly get fast again.

I am stuck with an android 6.0.1 on a galaxy j7 2015.

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  • If the phone is slow may be the max CPU clock speed is reduced (check it e.g. using an app like CPU-Z). The current CPU clock speed is set by the "CPU Governor" module. To modify it root permissions are required. Not sure if there is a user setting on Samsung devices that has influence the active CPU Governor. – Robert Jan 18 at 8:33

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