Flux - Substratum Theme
Download for Android This app is available for Android only.- Category:Theme
- Rating: 4.8
- Language:English
- Updated:2026-07-06
Introduction
This is an application that can change your phone's interface. With the increasing prevalence of smartphones and the growing number of users, updating your phone screen is crucial. Its main features include: multiple color options, customizable interface, flexible keyboard, and unique functions. If you're tired of your default phone theme, try this software to give your phone a brand new modern look, a refreshed dynamic and sophisticated appearance. Enjoy pixel-perfect visual effects and materials.
Features
Change interface with many unique ideas according to personal style
Only one theme with many colors from classic to vivid
Change the keyboard to your liking
Unique post-update feature
Build your own theme to increase interest in using

Highlights
WIDE COMPATIBILITY
The application provides you with options to ensure an intuitive and fresh interface so that your device stands out. Not only that, you are free to change the appropriate tool, find commonly used features for the toolbar. Customize the features and arrange them neatly so that each time you use it, it does not take much time to search and ensures convenience when using.
Extensive Android Support: The application effectively supports devices using the Android operating system to facilitate the usage process as well as change the intuitive interface.
Broad ROM Compatibility: With many features and special support, this application has strong compatibility with many different ROMs.
Major OEM Support: In addition to adding many new features to help change the visual, the application also brings you many other special OEM support features for use.
DEEP CUSTOMIZATION
The application allows you to freely set interesting things in the wallpaper and edit its visual quality. The most interesting point is that you can choose ways to view visual notifications, which can be in a new scrolling form, in a popular sliding way, or other ways. Add more features to evaluate the featured wallpaper, change the view mode, and specify the features in the appropriate position for it.
Vibrant Visual Styles: The application brings you realistic and unique visual styles, and every detail in the image is clearly focused.
True AMOLED Mode: In addition to the interesting realistic effect, the application also brings you many different types of modes, and you can refer to AMOLED to find it interesting. Flexible Notification Options: Users can freely choose different types of notifications, which can be in the form of a string or in the form of a typical scroll.

FAQ/HELP
Oxygenos Pie users, enable colorful theme from settings > display and set the accent color to default. Oxygenos 10 users enable dark theme from settings and set the accent to default color
Some qs tiles on android 8.1 don't change color and the inactive line can't be removed
The design of qs tiles look a bit different on oyxgenos and samsung because it is impossible to make them look like stock android ui from the screenshots
Enable Dark theme from your rom settings if the option is there
Please do not write your bug/suggestion reports in the reviews, instead contact me via email or use the community link below
Want full black backgrounds everywhere instead of dark, for your amoled screen?
Select the amoled background option from Android System overlay and then Build & Enable it
If you want light notification backgrounds, enable the light notifications options from android and systemui overlays
Beta software are not supported even though my theme may work with them
Battery and signal tiles in quick settings panel cannot be themed
LineageOS is not officially supported, although Flux may work with it

User comments
Awesome dark theme. One of the best.
Excellent theme, but the system ui theme apk breaks my recents screen when the recents is empty. More stars when this is fixed. Im on 7.1.2.
One of the best black themes available.
Unlike other free alternatives, acquiring this version requires a nominal fee, but the unique features it provides will undoubtedly meet your expectations. Unleash your creativity by customizing and visualizing the perfect look for your device. Users familiar with previous versions like Flux White will find that the operation of Flux Substratum Theme is quite similar.
Creating an artistic theme enhances user engagement, attracting those who appreciate colorful vibrancy and refreshing their mobile experiences. Instead of numerous theme options, the developer offers one theme incorporating several primary colors; though subtle, this adaptation significantly enriches the user’s creative expression.

Conclusion
It elevates the customization game by providing a comprehensive theming solution beyond the surface. Its modern design, extensive customization options, and community support offer your device a fresh and personalized look. Whether you're a theming enthusiast or someone looking to give their smartphone a unique touch, it is a must-try.
More Information
- Size:19.5MB
- Version:6.5.7
- Requirements:Android
- Votes:420
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