One of the sites reports that it was displaying on a non-standard screen resolution device, which, after a simple calculation, corresponds to the screen resolution expected by analyst Ming-Chi Kuo for iPhone 8.
Several months ago, Ming-Chi Kuo, an analyst with KGI Securities, speculated that the iPhone 8 would receive a 5.8-inch OLED display. However, its screen will be divided into two areas where one of them will be called. Function section. So far it is not known whether this will actually happen and how exactly this area will work. However, Kuo pointed out that the application display field (outside the functional section) would be 2436 x 1125 pixels. Interestingly, the identical resolution was noted by MacRumors in the logs of visitors to their site.MacRumors has recently been visited by Cupertino's 375×812 pixels and Sunnyvale and San Francisco. If you multiply these values by three, the result corresponds to the resolution given by the Ming-Chi Kuo analyst. As if that was not enough, the devices are powered by iOS 11. It is worth adding that Apple introduced the Retina displays on the occasion of the launch of iPhone 4 in 2010. Since then, Apple smartphone screens have doubled or triple pixel values, making the display more expressive. For example, the iPhone 7 has a resolution of 750 x 1334 pixels, but the device leaves a trail in logs as 375 x 667 pixels. With the iPhone 7 Plus the matter is even more complicated , but the resolution is 1242 x 2208 pixels (3x 414 x 736 pixels). What is the purpose of testing new iPhones to enter MacRumors? This is not known, although we can only guess that it is a question of viewing selected (not necessarily random) web pages on a new device. Source: MacRumors