To use the BigBlu Substratum Theme, your device must meet certain technical criteria:

The remains a sought-after customization tool for Android enthusiasts who prefer a sleek, dark aesthetic with deep blue accents. While newer versions like V30.5 have been released, many users still look for V25.3 due to its stability on specific legacy ROMs and OS versions. What is BigBlu Substratum Theme?

Most Substratum themes require root access or the Andromeda desktop client for rootless operation on Oreo.

The theme works best on ROMs with OMS (Overlay Manager Service) support.

Unlike standard themes, BigBlu allows you to choose from multiple button designs or remove them entirely for a "minimalist" look.

You must have the Substratum Theme Engine installed to apply the BigBlu overlays. Performance & User Feedback

BigBlu Substratum Theme - Apps on Google Play