I never noticed this before, but iOS seems to compress images strangely when viewing them on the phone. I've been trying to make some nice looking wallpapers for the retina display, but the compression artifacts and resizing are annoying. If I lookup a nice hi-res image on Google Images, it's all blurry when I zoom in. Check it out with the sample below (5000x3750). http://www.psdgraphics.com/file/blue-sky.jpg On an actual computer, you can zoom in and read that text in the upper left corner. On the iPhone, if you zoom in on that text, it's all blurry. You're not getting the full resolution in Safari. If you save it to your phone, you can't zoom in all the way to read the text in the Photos app. If I zoom in with Dropbox, I can't zoom in all the way either, but it also seems blurry, like in Safari. So, I tried using photoshop to make a high quality 960x640 crop of a part of the image. That works and I can then zoom and see the text fine. However, there still seems to be bizarre compression artifacts. If I set the cropped image as my wallpaper, there is pixelation and blurriness around the clouds that I don't see when I look at it on my computer. Maybe iOS automatically reduces images down to 16-bit or 8-bit color (even though it should be able to handle 24-bit)? It looks more like compression artifacts than loss of color depth to me though. However, if you take a photo and sync it to your computer, it looks fine and is in full 32-bit, so it's only overly-compressed when viewed on the phone. Has anyone else noticed this? Am I crazy? Any workarounds? I want some really nice looking sharp wallpapers for the retina display. The built-in Wallpapers look fine somehow, but I'd like to add my own.