System-wide shoulder triggers for Nubia Red Magic phones
About this app
RedTrigger enables shoulder triggers (SAR capacitive sensors) on Nubia Red Magic phones system-wide, without needing Game Space.
Nubia's game framework controls the shoulder trigger hardware and only activates them inside Game Space. The system also resets trigger settings every time you switch apps. RedTrigger fixes both issues.
How it works:
- Activates SAR sensors without launching full Game Space - Runs a watchdog service that detects when Nubia's SystemMgr resets trigger settings on app switch - Re-applies settings instantly, keeping triggers active across all apps
Key remapping (via Shizuku):
- Reads raw input events from /dev/input using a Shizuku UserService - Optionally injects remapped key events (L1/R1) so apps like KeyMapper can capture them - Uses a virtual uinput device so remapped events appear as real hardware input
Requirements:
- Nubia Red Magic phone (tested on Red Magic 11 Pro) - Shizuku installed and running (wireless ADB or root)
The app automatically grants itself WRITE_SECURE_SETTINGS via Shizuku, so no manual ADB commands are needed. Enable "Auto-enable on boot" to survive reboots.
Licensed under MIT, by Lucas Zampieri.
What's New in v3.0.15
Imported from the F-Droid repository index.
Version history
Jun 21, 2026 · 17.2 MB · Android API 29–35 · code 50
Imported from the F-Droid repository index.
SHA-256 2574e6847916877735417dc0163b13443db221a74cb76ff1b7061ea93da4611a
Will it run on your device?
60%
- Targets newer Android builds, so legacy devices may be excluded.
- 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 com.redtrigger 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
No earlier build is on record for RedTrigger, so there is nothing to roll back to yet. When a second version is published, this section will explain how to move between them safely.
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 RedTrigger, and a listing is removed when the evidence for it stops holding up.
Get RedTrigger
Every source we list for com.redtrigger 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
2574e6847916877735417dc0163b13443db221a74cb76ff1b7061ea93da4611a
Signing certificate
080a415c66b42f6cf19968c1a1e1cf7f8089c4e11db56c20d099d4b5c0865bc2
Permissions Required
What each permission lets RedTrigger do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
Previous Versions
No earlier build is on record — this is the first release we have listed.
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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