I need know waht resolution or size of images need I to make an universal app. I need all images to show correctly in iphone 4, 4s, 5, 5s. I know that need images resources with @2x in the name for see in retina, but I don't know what resolution need this pictures? Need I one image to iphone 4, the same for 4s, 5, and 5s?
Thanks!