RedTrigger

Lucas Zampieri | System

7 Downloads 12 Views v3.0 17.21 MB 4.1+

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(17.21 MB)

Editor's Overview

RedTrigger is a system application developed by Lucas Zampieri, packaged as a single Android APK of version 3.0 weighing in at 17.21 MB. The package targets Android 4.1+ and above. Below you'll find the publisher's own description, a quick spec sheet, and a short buyer-beware checklist so you know exactly what you're installing before tapping download.

Install Checklist

Only download through the button on this page — never from third-party mirrors or shortened links, which are the most common way malware spreads.
File size is a light 17.21 MB, so it installs quickly even on modest connections.
This build is signed by "Lucas Zampieri" — always verify the developer name matches what's listed on the app's official store page before installing an update.
After install, Android may prompt you to allow "Install from unknown sources" — approve only this one install, then revoke the permission in Settings > Apps > Special access.
We link directly to the APK file or the publisher's repository; we do not modify the binary. Always run a virus scan after any sideloaded install.

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.

Details

Version	v3.0
Size	17.21 MB
Developer	Lucas Zampieri
Category	System
Package	com.redtrigger
Android	4.1+
Last Updated	Oct 29, 2026
Downloads	7

Frequently Asked Questions

Is RedTrigger free to download?
Yes. The APK file linked from this page is free. The developer may offer in-app purchases once installed, but obtaining the installer itself costs nothing.

What Android version does RedTrigger require?
Android 4.1+ or newer. Installing on older devices may cause crashes or refuse to install.

Is RedTrigger safe to install?
We link to the exact APK published by Lucas Zampieri. We do not modify the file. Still, as with any sideloaded app, scan it with a reputable antivirus before opening it, and only grant permissions the app genuinely needs.

How do I update RedTrigger?
Install the newer version on top of the old one — Android will keep your data. If the signature differs, uninstall first (you may lose local progress).

Why is the app not installing?
Common causes: not enough storage, an older Android version than 4.1+, or a conflicting build already installed. Free up space, check your OS version, and uninstall any previous copy before retrying.

How to Download & Install RedTrigger

Tap the Download APK button above and save the file to your device.
Open your device Settings → Security (or Apps → Special access → Install unknown apps) and allow your file manager or browser to install unknown apps for this one file only.
Open the downloaded com.redtrigger.apk file from your Downloads folder.
Tap Install and wait for Android to finish.
Open «RedTrigger» by Lucas Zampieri and grant only the permissions it actually needs.
Revoke the "unknown sources" permission once you are done installing.

Note: this page hosts or links to the installer only. The application name, icon and description are provided for identification. All trademarks belong to their respective owners.