The iPhone is the only mobile device I know of that has a SIM card tray. Insert a paper clip into a small hole, out pops a piece of plastic designed to hold your SIM card, lay your SIM inside, shove the tray back in, and boom, start dialing AT&T customer service and ask them why you keep on getting dropped calls. The photo above depicts what is supposedly the SIM card tray for the next iPhone. According to China Ontrade, who says the tray comes directly from Foxconn, the new part is 3.22 mm taller and 21.7 mm wider than the SIM tray in the iPhone 3GS, which would mean that an iPhone with a larger screen is due to be released. In the photo below, China Ontrade shows the new SIM tray compared to the old one.
Is Apple going to replace the iPhone 3GS so soon or are they simply planning on expanding the family with a larger device? Time will tell.