A new report out today about the Jesus-Phone, this time saying that the reported iPhone screen problem are set to get worse. Apparently, after 3 to 6 months of heavy use, the screen will start to degrade and would be less likely to pick up touches.
With so much technology packed into one screen and phone, problems are sure to pop up. No major problems have arose to date that effect you from using your iPhone currently but over time you may run into a few setbacks.
Via [IntoMobile]
Update
The iPhone does not use heat chemical deposition technology, nor does it detect inputs based on heat.
From the linked site.