As we all know, the Xperia Z5 released by Sony Mobile last year Premium (Bank of China: Xperia Z5 Exclusive Edition, hereinafter referred to as Xperia Z5 P ）It claims to be the world's first smartphone equipped with a 4K resolution screen, but in fact, the screen of Sony Xperia Z5 P only turns on the 4K resolution mode when viewing photos and videos, while in other cases (browsing the web, QQ, WeChat, microblog, etc.) it has only 1080P resolution.

At present, Z5P's Android 6.0 has been pushed, and many users have found that the system screenshots of Z5P in their hands display a resolution of 4K. It is confirmed that the Z5P of Android 6.0 is indeed displayed in the system with 4K resolution, which is mainly because the Android 6.0 system natively supports 4K display (Android 5.1 does not work). But Suofen is not too happy yet. Because the third-party app has not optimized 4K, the advantage of 4K resolution cannot be reflected in the third-party app. In addition, due to the limited performance of the Xiaolong 810 on the Z5P, the bandwidth is only 25.6GB/S, and the bandwidth of at least 32GB/S is required to smoothly drag the 4K resolution.