FAQs
French
Fix a black screen with no sound
If you experience a black screen without any audio when trying to launch a training module on Tradefox, it typically indicates a connection issue, a browser conflict, or a problem with your device’s graphics processing.
Follow the troubleshooting steps below based on the device you are using.
Web (WebGL)
If you are accessing Tradefox through a web browser on a laptop or desktop, the black screen is usually caused by the browser’s inability to render 3D content.
- Enable Hardware Acceleration: Tradefox uses WebGL to render 3D simulations.
- Go to your browser Settings.
- Search for Hardware Acceleration.
- Toggle Use graphics acceleration when available à ON.
- Restart your browser.
- Update Graphics Drivers: Ensure your computer’s graphics card drivers (NVIDIA, AMD, or Intel) are up to date.
- Check Browser Compatibility: Ensure you are using a supported browser like Chrome or Firefox. Note that some “Incognito” modes disable the necessary storage for WebGL to function.
Android
On Android, a black screen often means the app is struggling to initialize the graphics engine or is blocked by a power-saving mode.
- Clear App Cache: 1. Go to Settings > Apps > Tradefox. 2. Tap Storage & Cache. 3. Tap Clear Cache.
- Disable Battery Saver: Some Android devices throttle graphics performance when the battery is low or in “Power Saving Mode,” which can prevent the simulation from loading.
- Check Play Services: Ensure Google Play Services is updated, as it manages many of the underlying 3D components for Android apps.
iOS (iPhone & iPad)
For Apple users, the issue is often related to “Webkit” constraints or temporary memory issues.
- Force Restart the App: Swipe up from the bottom (or double-click the Home button) and slide the Tradefox app off the screen to close it completely. Reopen and try again.
- Check Content Restrictions: If you have Screen Time or Content Restrictions enabled, ensure that “Web Content” isn’t being restricted, as this can block the downloading of simulation data.
- Update iOS: Tradefox requires modern graphics APIs found in newer versions of iOS. Go to Settings > General > Software Update to ensure you are on the latest version.
Global Connection Check
Regardless of your device, the 3D assets in Tradefox require a strong connection to load initially.
- Stability: If your Wi-Fi signal drops during the “Handshake” (when the screen first goes black), the simulation may fail to start.
- Firewalls: If you are on a corporate or school network, ensure that the network allows traffic from tradefoxapp.com.
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