FakeBlankScreen

FakeBlankScreen is an open-source Android utility for keeping a device active while a long-running task continues in the background. It is intended for people using devices with OLED displays who need to prevent the device from sleeping without leaving a bright image on screen. When launched, it replaces the visible display with a black screen.

The app acquires a screen wake-lock, which prevents Android from entering sleep mode while it is running. This allows background processing to continue instead of being stopped or restricted by device sleep. Keeping the display black is intended to reduce the screen-related concerns associated with leaving an illuminated image visible on an OLED panel, including burn-in. The app has a deliberately limited operation: launching it shows the black screen and enables the wake-lock.

FakeBlankScreen does not provide its own exit control. To close it, the user can swipe from the top or bottom edge to reveal the navigation bar, open the recent-apps list with the square button, and close the app there. This interaction is relevant for users who want a simple temporary screen state rather than a tool with additional controls.

On MirrorNest, FakeBlankScreen fits the Android System Tools category because it changes how the device handles screen visibility and sleep while an active task runs. Its open-source license makes the source-available nature of the software part of its distribution context. MirrorNest mirrors the official Android build directly on its own storage and scans it for malware before publishing it.