Connect the charger to the phone
Connect the charger to the socket and to a wall socket.
When the horizontal lines next to the battery icon are moving, charging is in progress (it may take a few seconds before this happens).
End charging
When the battery is fully charged, you can remove the charger from the wall socket and the phone.
When the phone is turned on, you can always see the battery power level. The more lines next to the battery icon, the more remaining power on the battery.