Doing what exactly? That is awful, but it does obviously depend on what you were doing. For example I could run tomtom and that wouldn't last an hour.
Long phone conversation, browsing the forum, and literally flicking through demo edition of photo magazine in newsstand.
I let it run to the end, switch itself off, then left it on charger overnight, over 8 hours. Took it off the charger this afternoon, and I'm still not a very happy bunny:
Notifications off, wifi off, time zone stuff off, bluetooth off, no automatic sync services, siri on but "rise to speak" off, all applications closed down last night, the phone is on the same table, in the same house, 5 bars 3G coverage. It's my first iphone, so it wasn't restored, fresh installation, brand new phone.
I answered one call for 3 minutes and took this snapshot, had two unexplained notifications on the screen (as I described in previous post, despite notifications being off for all bar phone, messages, reminders and calendar). I can promise you beyond any doubt I did not use the phone for 20 minutes, so something under the skin there is working and working hard eating battery like nuts.
By the time I finished typing this, I woke up the phone and the battery is now down to 82% and usage up to 27 minutes, and all I did was send the screenshot and enter usage menu. 15-20% down in 4.5 hours, it looks like the phone won't make it through 24 hours in stand by mode practically just sitting and resting on the table.
The trouble of course is - I don't really want to be switching data off, bluetooth off, locations off either - it's not why I bough smartphone.