Your battery has been partially charged at the factory, but you may need to recharge it before you can switch on your phone for the first time.
If the phone indicates a low charge, do the following:


You do not need to charge the battery for a specific length of time, and you can use the phone while it is charging.
When the battery is charging, the charging indicator flashes slowly. When the battery is full, the charging indicator is continuously on.
If the battery is completely discharged, it may take several minutes before the charging indicator is displayed or before any calls can be made.