The Redmi Note 9S comes with a 6.67″ FHD+ resolution display. It’s one of the first devices to come with the Qualcomm SM7125 aka Snapdragon 720G chipset. Unlike MediaTek devices, most of the Qualcomm devices out there have good enough support from the custom developers. As such, the Redmi Note 9S is no short of any custom ROMs.
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So for those who’re looking for the best custom ROMs for Redmi Note 9S. The article ought to help them.

1. OFFICIAL Resurrection Remix Q v8.6.3

Version Information
ROM OS Version: Android 10
Status: Stable

One of the stock stable custom ROMs available for Redmi Note 9S. In case if you don’t know the Resurrection Remix is based on LineageOS, SlimRoms, Omni and the original Remix ROM build. Literally a blend of all the custom ROMs giving an improved performance, customization, power, and the newest features.

The ROM features a ton of customization options. If you’re into customizing your device from head to toe, then the ROM is for you. Another good thing about the ROM is it gets regular OTA updates from the maintainer.

More information on the ROM can be found here.

2. OFFICIAL HavocOS-3.7

Version Information
ROM OS Version: Android 10
Status: Stable

HavocOS 3 is based on AOSP, with Google Pixel’ish UI and features. With a more refined Material Design language and added essential features, the HavocOS can be a better alternative for the stock MIUI. Listing all the features won’t be viable now, hence, have a look at some of the general features down below.
  • Material Design 2 UI
  • Android R Style Screenrecord Dialog
  • Rounded UI
  • Inbuilt GApps
  • Face Unlock
  • Enhanced QS Battery Estimation
  • Lockscreen Clocks
  • Font Customisation
  • Dark Theme Support for AOSP apps
  • Notification LED Settings
  • Pixel Lockscreen weather
  • Signature Spoofing
  • Micro-G support
  • Lockscreen charging animation

And much more, which you can explore on the go with the HavocOS. The HavocOS build available for the Redmi Note 9S is stable with few to no bugs. See some of the screenshots to have a better idea of the UI.

More info on the ROM is available here including the flashing guide.

3. OFFICIAL Evolution X 

Version Information
ROM OS Version: Android 10
Status: Stable

Another stable Android 10 based AOSP ROM for the Redmi Note 9S. Evolution X ROMs are known for their meticulous UI altered for better viewing experience both in day and night mode. The ROM is no less in terms of a bunch of features and customization options.

Some of the features are:

  • Pixel Theme Picker
  • Network Traffic Activity
  • Notification light Config
  • Bottom Brightness Slider Toggle
  • Power Menu Customization
  • Double Tap To Sleep Status Bar

Check some of the screenshots below for better visualization.

More info about the ROM can be obtained from here.

4. UNOFFICIAL LineageOS 17.1

Version Information
ROM OS Version: Android 10
Status: Stable

LineageOS has its own fanbase. If you’re one among them, then you should really try out the LineageOS 17.1 based on Android 10 for your Redmi Note 9S. Though unofficial, the builds are pretty stable. It brings all the bells and whistles that you can expect from LineagOS 17.1.

The LineageOS 17.1 build has a few bugs. Such as Widevine L1 won’t work which means no HD streaming on platforms like Netflix etc. If you find it deal-breaking then you may try out the above ROMs.

For more info, visit here

5. UNOFFICIAL LineageOS 18.0

Version Information
ROM OS Version: Android 11
Status: Testing

The sole Android 11 based ROM is available for the Redmi Note 9S. If you want to have the taste of Android 11 before the official roll-out then try the LineageOS 18.0 on your device.

It’s in the testing phase, so expect a handful of bugs.

More info on the build is available here.

Hope you liked our exclusive collection of the best ROMs for Redmi Note 9S. You can find custom ROMs and other guides on other devices from our dedicated section for custom ROMs.

Related: How to root Redmi Note 9S with Magisk