The alleged rear shell for Apple’s rumored budget iPhone may have been leaked in a photo posted on Tactus. The photo shows a uniform white case likely made from polycarbonate. From the photo, it appears the screen size could be 4”, like the iPhone 5. The report with the photo alleges the budget iPhone may have an A5 processor like the iPad mini, a 3.5” screen, and 5MP camera. Also noted is that the device will allegedly come in white,…