With the Redmi Note 5, Xiaomi has a quite interesting device on the market, which promises smooth working with Snapdragon 636. Whether the price of a good 185 Euro is justified, should be clarified here.
Xiaomi uses a display with 2,160×1,080 pixels of resolution and an aspect ratio of 18:9 (2:1). The IPS display is sufficiently bright, but doesn't come close to the brightness of devices like the iPhone X - the comparison is of course unfair, also considering the price difference.
My device was shipped with Android 8.1 "Oreo" with the latest security patches installed. MIUI 9.5, a launcher developed by Xiaomi, runs on it. Similar to the iOS interface, it distributes the apps on different screens. Other launchers can of course be installed without problems.
Snapdragon 636: enough power
To be achieved 1,341 counters in single core and 4,937 in Geekbench 4 multi-core benchmark (for comparison, the Mi A1 achieves 875 points in single-core and 4,279 in multi-core measurement)
Redmi Note 5: Camera
Videos are recorded by the camera in Full-HD. With the app "Open Camera" from the Play Store the possibilities of the SoC can be exploited to the full and videos with 3,840×2,160 pixels can also be recorded. Whether Xiaomi will include this feature in the official app is still open - but Xiaomi is certainly developing its ROMs further.

Other functions
Xiaomi obstructed by Redmi Note 5 on the back a fingerprint sensor that really responds very quickly and is easy to reach. There is also an infrared transmitter that can replace a remote control with the right app.
The next step is going to be on my Redmi Note 5 LineageOS 15.1 to be installed. To unlock the boot loader, you need to create an account with Xiaomi and wait 350 hours (15 days), after which you can install other ROMs.