Hi guys! So I've had my (week 21) iphone 4 for about 2 months now (funny huh? bought it and was surprised it had such a low serial number). I thought it was perfect until I held it against my friend's iphone 4 which was somewhat bluish (w41) and I held it against my girlfriends iphone 4 which was much bluer than either of ours. Is this normal? Is my iPhone defective? or is this product variance. I'm pretty sure it's not that glue problem. Because it would've dried by now. Thanks ahead of time you guys.