Substratum is a popular theming tool for Android devices that allows you to customize the look and feel of your device's user interface. It utilizes the Overlay Manager Service (OMS) introduced by Sony, and allows for a deep level of customization without needing to root your device (though root access can enhance its functionalities further). Here's a guide on how to use Substratum to customize your Android UI:
Prerequisites:
- Compatible Android Device: Ensure your phone supports OMS. Substratum works best with Android Oreo (8.0+) and some Nougat (7.0+) devices.
- Substratum Theme Engine App: Install the Substratum app from the Google Play Store.
- Substratum Themes: Download compatible themes from the Play Store.
- No Root or Root Access: Depending on your device and Android version, root might be required. Some devices can use Andromeda (a paid add-on for Substratum) for rootless theming.
Installation Steps:
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Install Substratum:
- Download and install the Substratum Theme Engine from the Play Store.
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Choose and Download a Theme:
- Browse the Play Store for Substratum themes.
- Download and install your preferred themes.
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Enable Developer Options:
- Go to Settings > About Phone.
- Tap on Build Number seven times to unlock Developer Options.
- Navigate back to Settings and open Developer Options.
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Enable USB Debugging:
- Inside Developer Options, enable USB Debugging to allow connection to your PC for setup (especially for Andromeda).
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Using Substratum:
- Open the Substratum app and grant it the necessary permissions.
- Select the theme you installed, and you will see different UI elements that can be customized.
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Apply a Theme:
- Inside the theme, check the overlays or interfaces you wish to change.
- Tap on the floating button with the paint roller icon to compile and apply the selected overlays.
- Your device will automatically apply the theme overlays.
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Reboot:
- Some overlays might require a reboot to fully apply. Substratum will notify you if this is needed.
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Adjustments:
- If a theme isn't applied correctly, you can revert changes or adjust settings within the Substratum app.
Benefits of Using Substratum:
- Customization: Comprehensive theming options for almost all parts of the Android UI.
- User-Friendly: Easy-to-use, with a plethora of themes to choose from.
- Community Support: Large community of users and developers for help and theme support.
Cautions:
- Compatibility: Not all Android devices or versions support Substratum natively.
- Risk of Bricking: Improper use can lead to device instability.
- Battery Drain: Some themes can increase battery consumption.
Using Substratum, you can give your Android device a new look tailored to your style preferences, enhancing your overall user experience.


