The Gallery app is fairly simple. It defaults to showing your camera roll sorted by date (we miss the option to change the thumbnail size). Alternatively, you can browse images by folder, including a special "Recently deleted" folder, which will save accidentally deleted photos. Remember that you can encrypt files, but there's no way to do it directly from the gallery.
The app does offer a feature to quickly build a collage out of several selected photos. You can also edit individual photos with the usual crop and filter tools, free-hand doodling too. Slightly more advanced features can blur part of the image (to simulate shallow depth of field) and pixelate areas to censor a part of the image or just for artistic effect.
There's a dedicated video player app on the Oppo R9s, not too different from the gallery. It separates files into videos shot with the camera and all videos. During playback, you can use swipe gestures to control the app - sideways to scrub through the video and up/down to change the volume (right side of the screen) or screen brightness (left side). Pop-up video playback is available too.
The ColorOS music player (like the gallery) has a clear iOS aesthetic and is fairly simple in operation. You can browse the local music library by track, artist or album and that's about it. You can favorite songs to make them easier to find. Lyrics can be displayed, but they must be embedded into the file itself, the player will not fetch them from the Internet.
The one more advanced setting is Dirac's Real HD Sound. It's an equalizer with multiple presets and three sliders for manual tuning - Bass, Baritone and Treble. This works with headphones only, Dirac Power Sound powers the loudspeaker.
There's no FM radio available on the R9s.
The Oppo R9s did splendidly when hooked up to an active external amplifier. The smartphone posted excellent scores for clarity and was easily among the louder phones around.
Volume dropped a bit when we hooked up a pair of headphones, but remained above average, while stereo quality worsened a moderate amount. Some intermodulation distortion crept in, but it was nothing you would notice in everyday use. All in all a pretty solid showing even if not quite the best out there.
Anyway, here go the results so you can do your comparisons.
|Test||Frequency response||Noise level||Dynamic range||THD||IMD + Noise||Stereo crosstalk|
|Xiaomi Mi 5s||+0.01, -0.03||-89.6||90.2||0.0029||0.040||-85.5|
|Xiaomi Mi 5s (headphones)||+0.71, -0.31||-82.9||84.8||0.229||0.559||-48.0|
You can learn more about the tested parameters and the whole testing process here.