Pi Light [substratum] is a personalization theme created by Harsh V23, the founder of HyperLoop Substratum, for Android 8.1 devices. This theme is designed with Android Pie 9.0 style, featuring rounded corners (optional), rounded QS panel, rounded notifications, and a large status bar (Essential Phone style). It also has Android P-ify Xposed module support.

In order to use this theme, you need to have Substratum support for your device, which can be achieved by either rooting your Oreo device or installing the rootless theming client Andromeda. It is important to reboot your device after applying overlays to avoid potential bugs. This theme is not compatible with devices running Pie, as it is exclusively made for Oreo.

Pi Light [substratum] is a simple and elegant theme that will make your Android 8.1 device look like Android Pie 9.0. If you encounter any issues or have any requests, you can join the Telegram chat. If you experience any problems with Substratum, you can join the general support chat. Follow the developer on Google+ and the publisher on Twitter for more information.