Experts in mobile technology agree that if Apple does equip its next-generation iPhone with a 1136 x 640 Retina display, it will be “the number one 4-inch phone in terms of panel specifications in the market.” Reportedly capped at 4 inches on the diagonal with a resolution of 1136 by 640 pixels and 326 dpi (dots per inch), the Retina display embodied by the new iPhone 5 coming out this fall will be a killer. In fact, experts say that if Apple's new device continues to push the boundaries in terms of technology, "[it will] most likely cause other handset vendors to release 4-inch sized phones with similar specifications to counterbalance competition in the market.” The information comes from Taiwan’s hit-and-miss trade publication DigiTimes, which lately spoke with dozens of analysts and people in Apple’s supply chain to assess all relevant aspects of the iPhone 5 launch. In a recent report, the publication quoted industry sources as saying that Apple was likely to experience shortages of iPhone 5 units upon launch, mainly because of low yield rates in the production of in-cell touch panels and dock connectors. A fresh report by the same publication today says that Japan Display, LG Display and Sharp have actually improved their yield rates lately. By how much, though, it is not said. The sources cited on this particular tidbit reportedly said that, “at present all the panel makers have enhanced yield rates and production is going smoothly.” With a screen size half an inch larger diagonally compared with previous iPhones, and an enhanced resolution from 960 x 540 to 1136 x 640 pixels, “sources said these panel specifications make it the number one 4-inch phone on the market due to its resolution being higher than other 4-inch handsets made by vendors such as Samsung Electronics, Sony and Sharp,” according to Rebecca Kuo and Alex Wolfgram. There’s some debate as to whether the width of the display will be enhanced as well. However, 99 percent of all the recent hardware leaks indicate that this will not be the case.