I bought a P7 that came with EMUI 2.3 and B133 firmware.
Of course, the default screen resolution was 1080p, however, I enabled the ROG so that my screen resolution became 720p.
Then, I updated to EMUI 3.0 and B609 full firmware. In phone STATUS, it still says 720p.
On EMUI 3.0, there is...