Although the off-angle glow isn’t visibly different when shifting the display along the horizontal and vertical axes, anything in between dramatically decreases contrast as seen in the photos below. Outside of this basic test, I noticed that the display has worse viewing angles than the M7 and M8.
Both have some level of content-adaptive backlight control, which means that static contrast is lower than the value that we’ve tested it for. In this regard, the M9 seems to effectively identical to the M8. Our first test is focused on some of the basic aspects of the display, namely brightness and contrast. In order to fully utilize this hardware, we use SpectraCal’s CalMAN 5 Ultimate with a custom workflow for mobile devices.
HTC ONE M9 REVIEW GSMARENA PRO
In order to do this, we use our usual test suite which includes X-Rite’s i1Pro2 for accurate color and brightness measurements, along with X-Rite’s i1Display Pro for accurate contrast measurements. As a result, in addition to judging simple characteristics such as brightness and contrast, we also test how well a display matches against the sRGB color standard with a gamma target of 2.2. Something as simple as taking a photo can be difficult with an inaccurate display, as white balance on a photo could easily appear to be incorrect for a scene even if it isn’t. After all, if pink on one screen looks like magenta on another, this could easily result in a number of problems when sharing content. However, despite subjective preference we have to all have a common standard for color rendition. Color in general can be a subjective preference, as some prefer wide color gamuts and saturation compression to achieve a vivid look, but others prefer more muted and subtle colors. Something as simple as white point can divisive because some people prefer warmer colors, but others prefer a colder color balance. We can all agree that a display should get as bright as possible and that black pixels should be as dark as possible, but some characteristics are often subject to personal biases.
However, defining what an amazing display is can often be quite difficult. By now, it generally goes without saying that a high end smartphone needs to have an amazing display.
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