I'm trying to create an iPhone wallpaper from an image. (iPhone 4, retina display)
I've already found the resolution, which is 640 x 960, but the problem is that when I export the image out of Pixelmator (Mac alternative of Photoshop – similar to GIMP), the image looks fine, but the text that I've put is very blurry / pixellated.
I've increased DPI to 320, but the text still looks terrible.
What am I doing wrong?