Users have found an additional problem with the iPhone 4, following the complaints about reception and a proximity sensor. When using the iPhone camera, the photo’s color is not clear. Some iPhones come out yellowish color, and some with a greenish spot in the middle of the photo. One iPhone 4 user spotted this problem, and requested a new phone. His old one had a greenish spot in the middle of the screen. The new one had another problem as its photo was tinged yellowish. He requested a new one again, and the greenish spot returned. It is not known whether Apple will fix this problem with other problems encountered.