I am/was (not to sure anymore) planning to upgrade my 3GS to iPhone 4 this august. Not by choice; this is just when my contract is eligible for
an upgrade.
However there seems to be an aweful lot of problems with the iPhone 4; from
the signal dissapearing by bridging the gap (seriously why isn't it covered in some kind of concealer?
To the yellow blotch issues and the screen being about 100000x less resistant to damage then Steve would of had us believe.
There's also cases of the iPhone moving my itself when on a very slight slope. Not like sliding down due to gravity but actually moving. People are speculating it may be the gyro doing this.
How likely do you think it is that apple will sort any of these problems in the next couple if months?
Anyone here not had any problems with their phone? (please no apple fanbois that would say their phone was perfect even if it was a pile of smashed class and broke plastic.
I have an iPhone 4 and have been using it very heavily since one day before launch date (lucky pre-orderer).
Reception
I live in an area with good-to-passable AT&T reception (mostly okay on the outside, crappy on my iPhone 3G whenever I'm inside school buildings). Although I can reproduce the dropped-signal 'bug' when I hold my iPhone tightly, I hadn't even noticed it before reading about it. The truth is, even when I have my hand covering the antenna, I don't hold it tightly enough for the connection to drop, and I really doubt anyone would. To me, based on my experience for a week, the issue seems a bit artificial and in no way affects my ability to place calls. In fact, I've been extremely happy to notice that the reception improves in most places (I can now use my cell phone on more than 75% of the campus buildings).
Build quality
I haven't dropped the cell phone, and have been using it bumper-less and screen-less just to test what's up with the signal. My cell phone of course remains in pristine condition, with no scratching at all.
Of course, I have no way to judge how sturdy it is, but I do hope you will understand the bias involved in reporting these types of news. Think about it, who is more likely to come to a forum and report their phone status? Someone who has a scratch or someone that doesn't? Do you expect to see threads saying "Hey man, I have been using this for 5 days and no scratches

" I don't think so, even though I'd expect the majority to fall in this category.
Also, a number of media outlets have been doing stress testing on the iPhone to see just how much it can resist. At some point, it will break, that's for sure. I'm willing to take the videos I've seen as positive news, since I'm happy enough to see the phone flying a meter 3-4 times before breaking. It's not a rubber ball, but it's also not a glass vase. You really have to ask to yourself how its resistance compares to the previous iPhones, and I don't think the videos yet address that.
Overall experience
I cannot be happier with my phone. My girlfriend is a huge Apple hater, and she told me yesterday: "You know what? I think this phone is actually really cool." The quality of the screen, of the camera, and of some apps like iMovie simply make this phone worth every cent I paid for it. I highly recommend it.
Of course, I cannot say how it compares to the Evo, Incredible, and any number of phones out there. I've seen most of these, but haven't played with them for any number of days such that I'd feel comfortable deriving meaningful comparisons.
Take my advice for what it's worth. Of course, feel free to PM if I can help you in any way

Good luck cell phone shopping.