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Cause 1 of 5: Bluetooth is turned on
If Bluetooth is turned on, this will affect the battery life.
Solution: Turn off Bluetooth.
Find "Bluetooth"
Press Settings.
Press Bluetooth.
Turn Bluetooth on or off
Press the indicator next to Bluetooth.Depending on the current setting, the function is turned on or off.
Exit
Press the Home key to return to standby mode.
Or select...
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