I purchased a 32GB iPhone 4 on 6/24. I noticed when taking pictures in my bedroom, the pictures were overly yellow. I chalked this up to the white balance on the phone not being able to handle the CFL lighting in here. However, a few days ago, I was playing around with my girlfriend's 16GB iPhone 4, and hers did not exhibit the same extreme yellowing as mine did. I called Applecare and I did a swap on my iPhone 4 in a local Apple Store. I thought the new phone had corrected the issue, however, after further testing, I can say that it has not. There is either a hardware or software defect in the iPhone 4 32 that throws off the white balance in CFL lighting much more than the 16GB iPhone 4. Here are the pictures to prove the issue: ------ As a comparitive measure, here is a photo of a white piece of paper on my desk taken with a DSLR (Canon Rebel T2i). This photo was taken with my girlfriend's 16GB iPhone 4. There is some yellowing. This photo was taken with my iPhone 4 32GB. The yellow is much more extreme. .... Next I took a picture of the same piece of paper straight on. This is from the Canon Rebel T2i DSLR. This is from my old iPhone 3G. This is from my girlfriend's iPhone 4 16GB. This is from my iPhone 4 32GB. All three phones lined up: iPhone 3G, iPhone 4 16GB, iPhone 4 32GB. --------- As I stated before, I've already replaced my iPhone 4 once for this problem. I am not sure if it affects all 32GB models, but there is definitely a difference between the 16GB model and the 32GB. I know a phone camera isn't going to necessarily handle white balance the greatest with CFL bulbs, however the variance between the same iPhone model is very concerning. UPDATE!!! 7/5 With Replacement iPhone 4: Got home really late last night, so I wasn't able to do any super extensive testing, but here is one picture I took last night with my latest replacement phone (the phone came from a black box refurb at an Apple store). You can see the white stripe on the cup is more accurate in its white balance than the whites in my previous photos. Very promising!