MIUI is Xiaomi’s take on customizing Android for their devices, adding on several new features on top of stock Android, to the point that you cannot often immediately recognise the base Android version on a Xiaomi device. Xiaomi runs a continuous public Beta channel for several of its devices, giving the community a chance to try out new features before they can make their way over to the Stable channel. The latest MIUI 10 Global Beta 9.3.28 brings over April 2019's security patches and system-wide dark mode to some of the supported devices.

The official changelog posted in MIUI forums is as below:

  • Add Dark mode:After opening, the system interface and some applications will use dark color as the main color.Go to Settings -> Display -> Dark Mode
  • Updated Android Security Patch (March 2019)Increased system security.
  • Virus scan started over after users tapped the results of a completed scan.
  • Battery indicator didn't disappear when the Notification shade was opened on the Lock screen.
  • Adding passwords while transparent wallpapers are applied.
  • Issues with displaying notifications on the Lock screen.
  • Errors occurred while entering passwords and PINs.

However, based on the user feedback received so far, the official changelog appears to be incorrect in a few places. For instance, dark mode is not available across all devices: it continues to remain absent for the Poco F1, while users on the Xiaomi Redmi Note 5 Global and Xiaomi Mi 8 report that dark mode is present.

Further, the official changelog mentions March 2019's security patches, but the About Phone screen from a few devices show that the phone is on April 2019's security patches. The Poco F1 and Mi 8 are reportedly on April 1, 2019's security patch level, while the Redmi Note 5 Global has a patch level dated April 5, 2019. Google hasn't yet detailed what is new in these security patches, but these patches are usually shared with OEMs beforehand in order to be incorporated within updates.

MIUI Member Ilovemi8 has posted a list of changes that they have found in the latest Beta for the Mi 8. Changes include updated security patch, system-wide dark mode, improved notification settings, new battery style indicator (grey - discharge, green - charging, blue - fast charging), and changeable notification styles. You can find screenshots of the new features in their post.

MIUI 10 Global Beta 9.3.28 is released for a whole host of devices as mentioned in the official announcement post. The update is not available for the Redmi Note 4X, Redmi Note 4 MediaTek, Redmi 5 Plus, Redmi S2 and Mi 9. The update marks the first set of releases for the Redmi Note 5 and Redmi Note 5 Pro on Android Pie, which we noted last week. As a side note, some users have reported that this Beta has issues with mounting the microSD card on the Redmi Note 5, so take adequate backups accordingly.

You can download the latest Beta for your device from the official downloads page.

We hope Xiaomi improves upon its changelogs to accurately reflect the incorporated changes on a per-device level.

Source: MIUI Forums