Nokia phones had 1 week battery life. They were extending it to one month.
The iPhone had a < 1 day battery life. Ultimately consumers decided that given the app experience available on the iPhone they could live with that.
This was a bet Nokia would have never made—-they were not in the user interface business. The fact that Apple—who was not in the phone business—-entered their market was bonkers. But once you make your own silicon anything is possible. Plus they had already done the iPod.