Samsung Galaxy S III User Manual page 18

Charging the Battery
Your phone comes with a Wall/USB Charger (Charging Head
and USB cable) to charge your phone from any 110/220 VAC
outlet.
Note: The battery comes partially charged. You must fully
charge the battery before using your phone for the first
time. A fully discharged battery requires up to 4 hours of
charge time. After the first charge, you can use the
phone while charging.
1. Insert the USB cable into the port.
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2. Connect the USB cable to the charging head.
3. Plug the charging head into a standard AC power
outlet.
4. When charging is complete, unplug the charging head
from the power outlet and remove the USB cable from
the phone.
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Getting Started 11