The Wired Gang has an investigation into the hot and burny iPhones 3GS that are coming out, finding that many are getting so hot as to be uncomfortable. Once these reach a certain point they become a toasty brown and could completely fail.
“At some point, I became aware the handset had become very hot,” wrote Melissa Perinson, senior editor of PC World, who felt high temperatures while gaming and browsing the web on her iPhone 3GS. “Very, very hot — not just on the back, but the entire length of the front face, too…. Toasty doesn’t even describe how surprisingly hot it got. It was too hot to even put the phone against my face.”
Wired actually ran a poll and found that few felt it was really overheating. However, there have been reports of problems with these batteries and Apple is remaining mum.