An application that only displays a black screen to reduce power consumption.
About this app
Do you own a device with an OLED screen and run a long-running background task on it? And, do you want that task to keep running while minimizing battery use and avoiding screen burn-in? This app is perfect for that situation!
This app shows the black screen when it starts, and prevents the device from sleeping by acquiring the screen wake-lock. It is intended for devices that have an OLED display.
By keeping the screen black, processing in the background is not stopped/restricted unlike putting the device to sleep, Unlike simply keeping the screen on, it also does not cause OLED burn-in.
How to use:
When you launch this app, the black screen will appear. This app will enable the screen's wake-lock and prevent the device from entering sleep mode. That's all.
To close this app, swipe from the top or bottom edge of the screen to reveal the navigation bar, tap the square button to open the recent-apps list, and close this app from it. This app doesn't have exit function itself.
Licensed under MIT, by TlFoxHuman.
What's New in v2.1.3
Imported from the F-Droid repository index.
- Removed extra dependencies. As a result, the minimum-targeted version of Android has been lowered to Android 3 (API 11), and the size of the APK has been reduced to about 60KiB. (Thanks to ebraminio!)
Version history
Jun 25, 2026 · 0.1 MB · Android API 11–37 · code 6
Imported from the F-Droid repository index.
- Removed extra dependencies. As a result, the minimum-targeted version of Android has been lowered to Android 3 (API 11), and the size of the APK has been reduced to about 60KiB. (Thanks to ebraminio!)
SHA-256 242030fd43087f6bd2f16f5e23ffc45fe1448c56622f8f556e5534ec62868923
Jun 22, 2026 · 0.7 MB · Android API 16–37 · code 5
Imported from the F-Droid repository index.
- Organized the confused version names and tags.
SHA-256 b5ccf5eb8dba8c701893a69c71fe8c827cdaf73ecc09deb11fd0f6853a05b71b
Jun 18, 2026 · 0.7 MB · Android API 16–37 · code 2
Imported from the F-Droid repository index.
SHA-256 165858d751714b2d263fb75ee39dc9f01da9865fa3dac729ce4fc06a08d399cf
Will it run on your device?
78%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be net.tlfoxhuman.fakeblankscreen is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 2.1.2 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall FakeBlankScreen first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of FakeBlankScreen, and a listing is removed when the evidence for it stops holding up.
Get FakeBlankScreen
Every source we list for net.tlfoxhuman.fakeblankscreen is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
242030fd43087f6bd2f16f5e23ffc45fe1448c56622f8f556e5534ec62868923
Signing certificate
f1e9f343412c062af854e69ff7bbd5e155bc82fcebdb4f424601654be196ecf2
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
Report a problem with this listing
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.