Actually, Standby is powered on time since last full charge, inclusive of usage time. From http://www.apple.com/batteries/iphone.htmlAnd it's not an hour and a half either, it's 3 hours. 90 minutes of active usage.
Viewing Usage Statistics
Awareness of how you use your iPhone and knowing how long your battery typically lasts can help you improve its battery life. You can view your iPhone usage statistics by tapping the Settings icon on the Home screen and choosing General > Usage. Under the “Time since last full charge” heading you’ll see two items:
- Usage: Amount of time iPhone has been awake and in use since the last full charge. The phone is awake when you’re 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.
If you had maps running then you probably had GPS going at the same time - unless you disabled it.I went on facebook for 5 minutes and had google maps running because I'm routing out my trip to work by bus. No music or games. A little iMessage too.
If I have google maps running and close the app, does it still use gps? Not close it fully just hit the home button but it's still running. I ask because while I'm looking at the app I notice the location service is running by the indicator on the top right of the screen, but when I close it (again just hit the home button not x it out) the location services notification icon goes away. So that means its not using the gps, only when I bring it back up from the multi tasking bar does it continue to use the gps, I know because the blue dot showing my location jumps from where I am now from the where I was when I sent the app to the multi tasking bar. So it's not using gps the whole time so it shouldn't drain the battery that bad.If you had maps running then you probably had GPS going at the same time - unless you disabled it.
GPS is battery hungry and quite possible consumed that amount over 90 minutes.