diff --git a/packages/core/src/SystemInfo.ts b/packages/core/src/SystemInfo.ts
index 7c2cb25dd..15f1d044a 100644
--- a/packages/core/src/SystemInfo.ts
+++ b/packages/core/src/SystemInfo.ts
@@ -1,8 +1,8 @@
+import { AssetPromise } from "./asset/AssetPromise";
 import { GLCapabilityType } from "./base/Constant";
 import { Engine } from "./Engine";
 import { Platform } from "./Platform";
 import { TextureFormat } from "./texture";
-import { AssetPromise } from "./asset/AssetPromise";
 
 /**
  * Access operating system, platform and hardware information.
@@ -28,6 +28,16 @@ export class SystemInfo {
     return window.devicePixelRatio;
   }
 
+  private static _parseAppleMobileOSVersion(userAgent: string, osPrefix: string): string {
+    // Since iOS 26, Safari freezes UA OS version at 18.6, so Version/xx is more reliable
+    // Use Version/ if available, otherwise fallback to OS version
+    let v = userAgent.match(/Version\/(\d+)(?:\.(\d+))?(?:\.(\d+))?/);
+    if (v) return `${osPrefix} ${v[1]}.${v[2] || 0}.${v[3] || 0}`;
+
+    v = userAgent.match(/OS (\d+)_(\d+)(?:_(\d+))?/);
+    return v ? `${osPrefix} ${v[1]}.${v[2]}.${v[3] || 0}` : osPrefix;
+  }
+
   /**
    * @internal
    */
@@ -53,12 +63,10 @@ export class SystemInfo {
       let v: RegExpMatchArray;
       switch (SystemInfo.platform) {
         case Platform.IPhone:
-          v = userAgent.match(/OS (\d+)_?(\d+)?_?(\d+)?/);
-          this.operatingSystem = v ? `iPhone OS ${v[1]}.${v[2] || 0}.${v[3] || 0}` : "iPhone OS";
+          this.operatingSystem = this._parseAppleMobileOSVersion(userAgent, "iPhone OS");
           break;
         case Platform.IPad:
-          v = userAgent.match(/OS (\d+)_?(\d+)?_?(\d+)?/);
-          this.operatingSystem = v ? `iPad OS ${v[1]}.${v[2] || 0}.${v[3] || 0}` : "iPad OS";
+          this.operatingSystem = this._parseAppleMobileOSVersion(userAgent, "iPad OS");
           break;
         case Platform.Android:
           v = userAgent.match(/Android (\d+).?(\d+)?.?(\d+)?/);
diff --git a/tests/src/core/base/SystemInfo.test.ts b/tests/src/core/base/SystemInfo.test.ts
new file mode 100644
index 000000000..3f57a9bbf
--- /dev/null
+++ b/tests/src/core/base/SystemInfo.test.ts
@@ -0,0 +1,136 @@
+import { Platform, SystemInfo } from "@galacean/engine-core";
+import { describe, expect, it, beforeEach, afterEach } from "vitest";
+
+// Cast to access internal methods
+const SystemInfoInternal = SystemInfo as typeof SystemInfo & {
+  _initialize(): void;
+};
+
+describe("SystemInfo", () => {
+  let originalUserAgent: string;
+
+  beforeEach(() => {
+    originalUserAgent = navigator.userAgent;
+  });
+
+  afterEach(() => {
+    // Restore original userAgent
+    Object.defineProperty(navigator, "userAgent", {
+      value: originalUserAgent,
+      configurable: true
+    });
+    // Reset SystemInfo state
+    SystemInfo.platform = Platform.Unknown;
+    SystemInfo.operatingSystem = "";
+  });
+
+  const mockUserAgent = (ua: string) => {
+    Object.defineProperty(navigator, "userAgent", {
+      value: ua,
+      configurable: true
+    });
+  };
+
+  describe("_parseAppleMobileOSVersion for iPhone", () => {
+    // iOS 26+ Safari: UA freezes OS version at 18.6, use Version/xx to infer real iOS version
+    it("Safari on iOS 26 (UA frozen at 18.6)", () => {
+      mockUserAgent(
+        "Mozilla/5.0 (iPhone; CPU iPhone OS 18_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.0 Mobile/15E148 Safari/604.1"
+      );
+      SystemInfoInternal._initialize();
+      expect(SystemInfo.platform).to.eq(Platform.IPhone);
+      expect(SystemInfo.operatingSystem).to.eq("iPhone OS 26.0.0");
+    });
+
+    it("Safari on iOS 26.1.2 (UA frozen at 18.6)", () => {
+      mockUserAgent(
+        "Mozilla/5.0 (iPhone; CPU iPhone OS 18_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.1.2 Mobile/15E148 Safari/604.1"
+      );
+      SystemInfoInternal._initialize();
+      expect(SystemInfo.platform).to.eq(Platform.IPhone);
+      expect(SystemInfo.operatingSystem).to.eq("iPhone OS 26.1.2");
+    });
+
+    // Chrome on iOS: OS version is accurate
+    it("Chrome on iOS 26", () => {
+      mockUserAgent(
+        "Mozilla/5.0 (iPhone; CPU iPhone OS 26_0_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/138.0.7204.119 Mobile/15E148 Safari/604.1"
+      );
+      SystemInfoInternal._initialize();
+      expect(SystemInfo.platform).to.eq(Platform.IPhone);
+      expect(SystemInfo.operatingSystem).to.eq("iPhone OS 26.0.0");
+    });
+
+    // Firefox on iOS: OS version is accurate
+    it("Firefox on iOS 26", () => {
+      mockUserAgent(
+        "Mozilla/5.0 (iPhone; CPU iPhone OS 26_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/140.2 Mobile/15E148 Safari/605.1.15"
+      );
+      SystemInfoInternal._initialize();
+      expect(SystemInfo.platform).to.eq(Platform.IPhone);
+      expect(SystemInfo.operatingSystem).to.eq("iPhone OS 26.0.0");
+    });
+
+    // Edge on iOS: Use Version/ (may lose patch version, but acceptable)
+    it("Edge on iOS 26", () => {
+      mockUserAgent(
+        "Mozilla/5.0 (iPhone; CPU iPhone OS 26_0_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.0 EdgiOS/46.3.30 Mobile/15E148 Safari/605.1.15"
+      );
+      SystemInfoInternal._initialize();
+      expect(SystemInfo.platform).to.eq(Platform.IPhone);
+      expect(SystemInfo.operatingSystem).to.eq("iPhone OS 26.0.0");
+    });
+
+    // Opera on iOS: OS version is accurate
+    it("Opera on iOS 26", () => {
+      mockUserAgent(
+        "Mozilla/5.0 (iPhone; CPU iPhone OS 26_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.0 OPiOS/16.0.14 Mobile/15E148 Safari/604.1"
+      );
+      SystemInfoInternal._initialize();
+      expect(SystemInfo.platform).to.eq(Platform.IPhone);
+      expect(SystemInfo.operatingSystem).to.eq("iPhone OS 26.0.0");
+    });
+
+    // Legacy Safari (before iOS 26): OS version is accurate
+    it("Safari on iOS 18.4", () => {
+      mockUserAgent(
+        "Mozilla/5.0 (iPhone; CPU iPhone OS 18_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.4 Mobile/15E148 Safari/604.1"
+      );
+      SystemInfoInternal._initialize();
+      expect(SystemInfo.platform).to.eq(Platform.IPhone);
+      expect(SystemInfo.operatingSystem).to.eq("iPhone OS 18.4.0");
+    });
+
+    // WebView or in-app browser: No Version/, fallback to OS version
+    it("WebView on iOS (no Version/)", () => {
+      mockUserAgent(
+        "Mozilla/5.0 (iPhone; CPU iPhone OS 18_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148"
+      );
+      SystemInfoInternal._initialize();
+      expect(SystemInfo.platform).to.eq(Platform.IPhone);
+      expect(SystemInfo.operatingSystem).to.eq("iPhone OS 18.6.0");
+    });
+  });
+
+  describe("_parseAppleMobileOSVersion for iPad", () => {
+    // iPad Safari with frozen UA
+    it("Safari on iPadOS 26 (UA frozen at 18.6)", () => {
+      mockUserAgent(
+        "Mozilla/5.0 (iPad; CPU OS 18_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.0 Mobile/15E148 Safari/604.1"
+      );
+      SystemInfoInternal._initialize();
+      expect(SystemInfo.platform).to.eq(Platform.IPad);
+      expect(SystemInfo.operatingSystem).to.eq("iPad OS 26.0.0");
+    });
+
+    // Chrome on iPad
+    it("Chrome on iPadOS 26", () => {
+      mockUserAgent(
+        "Mozilla/5.0 (iPad; CPU OS 26_0_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/138.0.7204.156 Mobile/15E148 Safari/604.1"
+      );
+      SystemInfoInternal._initialize();
+      expect(SystemInfo.platform).to.eq(Platform.IPad);
+      expect(SystemInfo.operatingSystem).to.eq("iPad OS 26.0.0");
+    });
+  });
+});