Game Error Fortnite

Infinity Blade Secondary Attack Not Working on Mobile - Fortnite Fix Guide

📅 Published: 2026-02-06 🔄 Updated: 2026-02-06 👥 Reports: 5 ⚡ Severity: 🟢 Low

🎯 Quick Answer

The secondary jump attack fails due to a missing or unresponsive on-screen action button, which is resolved by verifying HUD layout settings and touch input calibration.

SECTION 1: OVERVIEW

The error is a failure of the Infinity Blade's secondary jump attack to execute on mobile platforms. This is a functional breakdown where the game client does not register or process the input command for the special ability. The issue is isolated to mobile operating systems, specifically Android and iOS versions of Fortnite. It occurs in game versions where the Infinity Blade item is available. The frequency is classified as occasional, manifesting under specific interface conditions. The severity impact is moderate, as it disables a core combat function of a mythic item, placing the player at a tactical disadvantage. No explicit error codes or crash reports are generated; the failure is silent within the gameplay mechanics.

SECTION 2: SYMPTOMS

The primary symptom is the non-activation of the Infinity Blade's secondary jump attack when the corresponding input is performed. The attack animation and damage effect do not trigger. This occurs during active gameplay when the player character is wielding the Infinity Blade item. The on-screen prompt or button for the secondary attack may be absent, unresponsive, or fail to highlight upon touch. The primary attack and movement functions remain operational. The game client does not terminate or display error messages; the input simply yields no result.

SECTION 3: COMMON CAUSES

Category: Configuration Error Specific technical explanation: The custom HUD layout has been modified, placing or resizing the secondary fire button outside the visible screen area or overlying it with another transparent element. Why this causes the problem: The game engine's touch event system cannot map the physical screen tap to the correct action if the button's interactive region is obscured or positioned incorrectly. Category: Game Bug Specific technical explanation: A race condition during item pickup where the UI controller fails to instantiate the secondary ability button for the Infinity Blade specifically, while other items' secondary functions load correctly. Why this causes the problem: The button object is not present in the scene hierarchy, making the action logically unavailable to the player despite the weapon being equipped. Category: Hardware Issue Specific technical explanation: Screen calibration drift or touch sensor malfunction on the mobile device, creating dead zones or inaccurate coordinate reporting for specific screen regions. Why this causes the problem: Physical touches on the area of the secondary fire button are not registered by the device's digitizer, preventing the input signal from reaching the game. Category: Software Conflict Specific technical explanation: Operating system-level gesture navigation (e.g., Android's gesture bar, iOS's swipe gestures) intercepting touch inputs intended for the game's UI elements along the screen edges. Why this causes the problem: The OS processes the swipe or hold input as a system command before the Fortnite application can receive the touch event for the ability. Category: Performance Issue Specific technical explanation: Low frame rate or significant input lag causing the game to miss the brief tap event for the secondary attack button, which may require a distinct press pattern compared to the primary fire. Why this causes the problem: The game's input polling cycle does not capture the touch-down and touch-up events within the required time window to register a valid button press.

SECTION 4: SOLUTIONS

Solution 1: Reset and Reconfigure HUD Layout

Difficulty: Easy Time Required: 3 minutes Success Rate: High Prerequisites: None Steps:

Launch Fortnite on the mobile device and enter the main lobby.
Open the Settings menu by tapping the three-line icon in the top right.
Navigate to the Settings cogwheel icon.
Select the Game UI tab.
Locate and select the HUD Layout Tool.
Tap Reset to Default and confirm the action. This restores all on-screen buttons to their factory positions and sizes.
Exit the settings and enter a creative match to test the Infinity Blade's secondary attack.

Technical Explanation: This clears any corrupted positional data in the GameUserSettings.ini profile that defines button placement, forcing the game to rebuild the UI with the correct button mappings for all weapons, including the Infinity Blade. Verification: In a match, upon picking up the Infinity Blade, a distinct secondary attack button (often depicting an upward arrow or unique icon) appears in the top-left quadrant of the screen and responds to touch input with the corresponding jump attack animation.

Solution 2: Calibrate Touch Screen and Disable Gesture Interference

Difficulty: Easy Time Required: 5 minutes Success Rate: Medium Prerequisites: None Steps:

Exit Fortnite completely.
Open the device's main Settings app.
For Android: Navigate to Display > Touch sensitivity (or similar) and enable any "Increase touch sensitivity" option. Then navigate to System > Gestures > System navigation and switch to 3-button navigation.
For iOS: Navigate to Accessibility > Touch > 3D & Haptic Touch and ensure it is enabled. Test the touch response.
Reboot the device.
Relaunch Fortnite and test the functionality in a match.

Technical Explanation: Increasing touch sensitivity reduces the input threshold, while disabling edge-based system gestures prevents the OS from consuming swipe inputs that the game interprets as a button hold for the secondary attack. Verification: General touch responsiveness improves across the OS. In-game, holding the secondary fire button triggers its intended action without triggering the device's app switcher or back gesture.

Solution 3: Verify Game Asset Integrity and Clear Cache

Difficulty: Medium Time Required: 7 minutes Success Rate: Medium Prerequisites: Sufficient storage space for asset re-download. Steps:

From the Fortnite lobby, open the Settings menu.
Navigate to the Settings cogwheel.
Scroll to the Account and Privacy section.
Select Game Content or Downloaded Content.
Choose the option to Verify or Repair game assets. Wait for the process to complete.
Close Fortnite completely.
Open the device's Settings app > Apps > Fortnite.
Select Storage or Storage & Cache.
Tap Clear Cache. Do not select "Clear Data" or "Clear Storage".
Relaunch the game and test.

Technical Explanation: The verification process compares local UI asset files with the server manifest, replacing missing or corrupted button textures and configuration. Clearing the cache removes temporary data that may cause incorrect UI element loading. Verification: The initial loading screen may take longer as assets are rechecked. The secondary attack button icon appears correctly with its proper graphic asset.

Solution 4: Adjust Graphical Performance Settings

Difficulty: Easy Time Required: 4 minutes Success Rate: Medium Prerequisites: None Steps:

In the Fortnite lobby, open Settings.
Navigate to the Video or Graphics settings tab.
Set Frame Rate Limit to 60 FPS or a lower, stable value.
Set Graphics Quality to Low or Medium.
Disable Background Audio and Reduce Vibration if available.
Ensure 3D Resolution is at 100% or lower.
Apply settings and restart the game client.
Test the attack in a low-population creative island.

Technical Explanation: Reducing graphical load improves CPU thread availability for the input handling system, decreasing input lag and ensuring the touch event queue is processed within the same frame it was received. Verification: Gameplay feels more responsive. The secondary attack button highlights immediately upon touch and the action executes with minimal delay.

Solution 5: Perform a Clean Reinstall of Fortnite

Difficulty: Advanced Time Required: 15 minutes Success Rate: High Prerequisites: Stable internet connection for re-download, Epic Games account credentials. Steps:

Ensure your Epic Games account is properly linked.
Open the device's Settings app > Apps > Fortnite.
Select Storage.
Tap Clear Data (Android) or Offload App (iOS). This removes all local files.
Uninstall Fortnite through the app store or system settings.
Power off the device completely for 30 seconds, then power it on.
Reinstall Fortnite from the official Google Play Store or Apple App Store.
Log in and allow all assets to download fully before entering a match.
Test without modifying any advanced settings first.

Technical Explanation: This eliminates all corrupted configuration files (GameUserSettings.ini, Input.ini), cached shaders, and potentially bugged UI scripts, replacing them with a fresh installation from the latest build on the content delivery network. Verification: The game runs its first-time setup tutorials. All UI elements, including context-specific buttons, are generated from base templates and should function correctly.

SECTION 5: PREVENTION

Maintain a standardized HUD layout and avoid placing interactive elements at the very edges of the screen. Regularly update the device's operating system and the Fortnite application to the latest stable versions. Before major game updates, clear the game's cache via device settings. Monitor device thermal performance during gameplay, as overheating can cause touch screen digitizer malfunctions. Periodically test input responsiveness in the device's hardware diagnostic menu, if available. Avoid installing third-party applications that overlay on-screen buttons or modify touch input behavior.

SECTION 6: WHEN TO CONTACT SUPPORT

Contact Epic Games Support if the error persists after performing a clean reinstall of the game and the issue is reproducible across multiple matches and game modes. Provide diagnostic information including the device model, operating system version (e.g., Android 14, iOS 17.2), Fortnite version number, and a video capture of the HUD layout and the malfunction. Official support channels are accessible via the Epic Games Help page at https://www.epicgames.com/help. Include any relevant log files, though mobile logging typically requires support direction to enable.