You should charge the phone battery regularly to ensure that your phone is always ready for use.
Step 1 of 3
Connect the charger to the socket and to a wall socket.
Step 2 of 3
When the battery charging icon is displayed, charging is in progress.
Step 3 of 3
When the phone is turned on, you can always see the battery power level. The larger the coloured section of the battery icon, the more remaining battery power.