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Samsung Galaxy A3 (2016)
Android 5.1.1
1 Find "Power saving mode"
Slide your finger downwards starting from the top of the screen.
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Press the settings icon.
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Press Battery.
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Press Power saving mode.
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2 Extend the battery life
Press the indicator to turn on the function.
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3 Return to the home screen
Press the Home key to return to the home screen.
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