I don't get the bitterness and hostility in this thread--if you guys hate the phone (and Apple) so much, just return the thing. It's almost like you have this sick love affair with on-again-off-again girlfriend who won't bend to your every will or emotion. You call yourselves "Apple fans" yet you bash and kick Apple like they're Micro$oft's left nut.
I'd be embarrassed to say I'm a Mac or Apple anything if it meant I was akin to the incessant whining that you people seem to pride yourselves on. This "I need...I want....I deserve" crowd is repugnant, and the iPhone appears to be the lightening rod for this overwhelming abundance of it.
Oh, already returned the iPhone 4? Great! Still need something to lament and grieve about? Take a trip to the Gulf of Mexico and use your "clearly and obviously" defective iPhones to plug the leak. At least it would go to a ever so slightly more selfless cause than sitting in front of your computer, bellyaching over why your bars don't jump when you want them to.
Perhaps something with the calibre of "largest oil spill in recorded human history" is something more noble of despair than your own materialist deluge of dolefulness over a material item. Moreover, if you tire of breathing the oil fumes and they begin to make you sick, take a trip to Haiti, and hang out with the locals....show them your iPhone 4, lament about how the bars aren't moving the way you want them to... I'm sure that you'll have lots in common together.
In other words--get over yourselves, it's a phone for christ's sake. There's a lot more important things going on in the world than what vibrates in your pocket or sends your "I'm on the couch, contemplating my navel" tweets to your closest 1000 friends on Twitter. Clearly if you had enough things to do in your own lives the least of them would be lamenting your iPhone's cellular reception, and Apple.