I'm running into a problem. If you have an image named image.png that is 320x240 for the older iPhone models and you create a higher resolution of the same image and title it email@example.com the safari browser on the iPhone 4 is supposed to display the higher resolution one.
I've been running a test at [lee.andron.com
...] and the larger image is not picked up on the iPhone 4 for me.
Anyone heard of this or know why it may not be working?