Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5) Hello. My iPhone 4 is about 4 months old. My friends also have an iPhone 4 and if i compare my iPhone 4 to theirs my iPhone screen is more yellow like it has less white lights. What can be the reason and how can I fix it? Thanks!