My time since last full charge: usage: 4 hours 30 minutes standby: 4 hours 30 minutes Can someone please explain to me the differences? How could they be the same? I read their description online but I'm not really following... I'm dumb I know Usage: Amount of time iPhone has been awake and in use since the last full charge. The phone is awake when youre on a call, using email, listening to music, browsing the web, or sending and receiving text messages, or during certain background tasks such as auto-checking email. Standby: Amount of time iPhone has been powered on since its last full charge, including the time the phone has been asleep.