Cellucent Core: Design and Evaluation of a Custom Android ROM for Sustainable, Long-Term Device Usability

A custom Android ROM engineered for sustainable long-term use of a device, evaluated on battery health, performance and update longevity.

A custom Android ROM engineered for sustainable long-term use of a device, evaluated on battery health, performance and update longevity. As a reference project it shows how a system like this is put together in practice, which parts matter and how they are tested, so that a developer can learn from it and build on it.

It suits learners building mobile skills: screens and navigation, local and cloud data, notifications, and publishing a working app.

The main parts are secure sign-in, clean screens for the main user journeys, cloud data with offline-friendly handling, and notifications for important events. The reference build uses Kotlin, Android SDK, Firebase, and REST API, with a clear project structure, setup instructions and sample data so that it can be run and extended.