The iPhone has yet again proven that people will put up with some of the worst wireless service in the world just to have a phone they can love. The iPhone won the 2009 JD Power awards for customer satisfaction in both the consumer and business categories.

If you take a look at the breakdown, no other phone came close. Sure, battery life was the iPhone’s weak point, but for all the other criteria, users scored the phone as high as possible. That’s quite a testament to the fanatical love people show for a phone that struggles most with actually making and holding calls, thanks to AT&T’s network.

In other, much less interesting news, LG was the winner for feature phones. Anyone surprised?

What more proof do you need than the iPhone’s sales figures that at the end of the day, it’s customer satisfaction that really matters. Sure your phone might be able to multi-task, it might have a unique, web-based operating system. It might even have the physical keyboard its competitor lacks. But if the whole world likes that other phone better, those features don’t mean a thing.