![OPPO A57 4G](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-ccc1f389-7e5c-4ef2-86b2-dac3129e8544.png?width=150&height=320)
OPPO A57 4G
Android 12.0
1. Charge the battery
Connect the charger to the socket and to a wall socket.
When the battery charging icon is displayed, the battery is charging.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-1947f825-3e67-42e7-9743-eb9e11da98db.png?width=200&height=446)
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.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-9a7d7d49-1709-4d0b-a490-fcda21ff950e.png?width=200&height=446)