How long the battery can last before it needs recharging depends on how you use your phone. Among these are the phone features and accessories you use (for example, leaving your Bluetooth connection always on uses more power). Long phone calls and frequent web browsing uses up a lot of battery power. Also, consider your location: poor signal strength from your mobile network and extreme temperature make the battery work harder.
When you charge the battery while the phone is on, the charging battery icon is displayed in your phone’s status bar. After the battery has been fully charged, the charging battery icon turns to a full battery icon .