Like we were saying, OnePlus has opted to include the standard Google app suite in the handset, but also hasn't skipped on developing a few basic apps itself. The Gallery app is one of them. You can just as easily browse your photos and videos through Google Photos or even the Files app, but Gallery also acts as a built-in video player.
Google Photos can handle some basic video playback as well and between the two, you can expect decent support, including Xvid, DivX, H.263, H.264 AVC (MKV files), and MPEG-4. However, if you want more versatility, or even relatively simple features, like subtitle support, look for a third-party solution.
The photo app also gives you a number of options. You can share stills, set them as wallpaper or contact photos, or edit them. The built-in Photos editor is incredibly powerful too.
As for music playback, again there are two options. The default Oxygen OS Music app is rather basic, but it does offer a few sorting options, as well as a few more advanced things like tags and favorites.
However, Google Play Music is still loaded on by default and it is a good thing too. It has come a long way and even if you don't intend to subscribe to Google's streaming service, it still offers bells and whistles like album art, powerful searching algorithms and also the neat ability to upload your own tracks to the cloud and stream them for free.
When plugged into an active external amplifier, the OnePlus 3T posted excellent scores top to bottom and garnished them with very high volume levels. A performance easily among the best on the market here.
Adding in a pair of headphones causes moderate damage to stereo quality and introduces some extra distortion. The overall output is still very good in terms of clarity but its volume also dropped from excellent to merely good so it's not longer an among the best.
And now here go the results so you can do your comparison.
|Test||Frequency response||Noise level||Dynamic range||THD||IMD + Noise||Stereo crosstalk|
|LG V20||+0.01, -0.03||-93.0||93.1||0.0036||0.0075||-93.7|
|LG V20 (headphones attached)||+0.04, -0.09||-92.4||92.4||0.051||0.105||-57.5|
You can learn more about the tested parameters and the whole testing process here.