I noticed that when using 3G, images in mobile safari load at lower quality, presumably to reduce data consumed and speed up surfing on 3G. It gives web pages a sort of 90s look. I noticed the effect when I was viewing a website with an image of a map, but the rendering over 3G was too low quality for me to be able to read it. Does your carrier do it - and do you think it's a good thing? Attached images: An image from MR rendered over wifi, 3G on o2, and 3G on T-mobile. It seems that T-mobile reduces quality the most.