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Old April 5th, 2013, 01:51 PM   #1 (permalink)
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Sad CPU Usage while charging

I noticed that while the phone is charging, it never drops to 0 % CPU usage, so no deep sleep. I searched for an answer but none of them were about S2.
Is this a normal occurrence in the Android OS or the S2 ?

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Old April 11th, 2013, 01:02 AM   #2 (permalink)
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Its normal mate.

Deep sleep doesn't occur while charging. CPU is at 200 MHz at this time.

I don't know the reason why though...
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Old April 11th, 2013, 01:34 AM   #3 (permalink)
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The CPU works as charging controller, eg. controls that the battery temperature remains in its charging operating range.

The Li-Ion battery's temperature operating range is:
for discharging -20C (-4F) to +60C (+140F).
for charging 0C (+32F) to +45C (+113F).

The battery won't be charged if its temperature is below 0C (+32F) or above +45C (+113F) because the phone's charge controlling will project the battery.
Therefore it'll shut down charging until the battery's temperature will meet again the charge operating range.

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Last edited by Harry2; April 11th, 2013 at 03:16 AM.
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The Galaxy S2 (sometimes known as the Galaxy S II) is the follow up to Samsung's widely successful Galaxy S lineup. This time, the Galaxy S2 raises all the stakes and Samsung has found a way to double almost every spec in a true, one of a kind ... Read More

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