I just had a look at my 3G S and my 3G and I couldn't replicate this problem. I don't think this is a valid reason to skip over an upgrade this big. It's obviously not present in every phone.
Just my opinion.
And I'm going to agree with a poster above me. I've read a good amount of the OP's threads and I'm gonna have to estimate that about 20% I agree with while remaining percentage is obsessive compulsive drivel that nobody else would notice or care about if they did notice it.
OP: If something bothers you that bad, take it in to get exchanged. You're obviously here to complain rather than to ask for advice (cuz nobody else's opinion matters when you're on your rants here) and it gets a bit tiresome after a while.
I'm not asking you for advice. I have an iPhone I am happy with after returning it 3 times. I don't feel like going through the same thing again with the iPhone 3G S. Do you understand?
Apple will NOT replace it for this problem because almost all the iPhone 3G screens at the Apple Store (including iPod touch's) have this "problem". It's a problem for me, but obviously not to everyone. If you can't see it, I envy you... I really, really do. Yes, perhaps the problem is me, but I know for a fact that I'm not the only one who sees this.
Also, someone said "don't move the iPhone". Good tip, but it's almost impossible to not move the iPhone if you're driving or walking or simply even moving your eyes.
I'm really, really, really, really grateful that I have an iPhone 3G with a screen that I am pleased with. So grateful in fact, that it's cracking and I don't want to return it in fear that I'll get one with the lines.
It's not in my head... it's really there. I must have sensitive vision or something. Note: Some are worse than others. Some iPhones show it will the brightness up to 50% and some show it even at 25% and some will only show it at 75-100% (like when you're outdoors). Mine is the 75-100% type. I can see it more when I'm outside than when it's dimmer inside and I'm happier with that.
Why do you guys give me a hard time. This thread wasn't meant for people who don't care about lines on their screen. This thread wasn't meant for people won't don't see them. If you don't see them, then good, you're good to go. If you're like me and don't like the lines, then I'm just warning you that the 3G S has the same issue as the iPhone 3G. That's all I'm trying to get across here.
I provided a screenshot to show a visual of the kind of thing I am seeing when I looked at the iPhone 3G S.