The much-anticipated iPhone 4 made its official debut today as thousands of gadget-loving folks lined up outside their local Apple, AT&T or Best Buy store to try and get a hold of the device -- whether they had pre-ordered one or not. Although reactions from early buyers have been mostly positive, there are already scattered reports of defective units, mainly regarding the high resolution Retina Display and the new steel antenna band that runs around the edges.

It's unclear how widespread these problems are, but at the time of writing both , the yellowish screen issue is caused by a bonding agent used in the display's layers of glass. Apparently, Foxconn is shipping these products so quickly that the bonding agent has not yet fully dried following the manufacturing process. We can't confirm the legitimacy of the source or its claims, but supposedly the issue should resolve itself after a day or two of use.