diff --git a/FirebaseAuth/Tests/Unit/PhoneAuthProviderTests.swift b/FirebaseAuth/Tests/Unit/PhoneAuthProviderTests.swift
index 7922ebcfb346..f9b28845e29e 100644
--- a/FirebaseAuth/Tests/Unit/PhoneAuthProviderTests.swift
+++ b/FirebaseAuth/Tests/Unit/PhoneAuthProviderTests.swift
@@ -247,6 +247,53 @@
       await fulfillment(of: [requestExpectation], timeout: 5.0)
     }
 
+    /**
+     @fn testVerifyPhoneNumberWithRceAuditInvalidRecaptchaAndAPNFallbackSuccess
+     @brief Tests a successful invocation of @c verifyPhoneNumber with recaptcha enterprise in audit mode
+     */
+    func testVerifyPhoneNumberWithRceAuditFallbackToAPNs() async throws {
+      initApp(#function)
+      let auth = try XCTUnwrap(PhoneAuthProviderTests.auth)
+      let provider = PhoneAuthProvider.provider(auth: auth)
+      let mockVerifier = FakeAuthRecaptchaVerifier()
+      AuthRecaptchaVerifier.setShared(mockVerifier, auth: auth)
+      rpcIssuer.rceMode = "AUDIT"
+      let invalidRecaptchaExpectation =
+        expectation(description: "verifyRequesterInvalidRecaptcha")
+      rpcIssuer?.verifyRequester = { request in
+        XCTAssertEqual(request.phoneNumber, self.kTestPhoneNumber)
+        XCTAssertEqual(request.captchaResponse, "NO_RECAPTCHA")
+        XCTAssertEqual(request.recaptchaVersion, "RECAPTCHA_ENTERPRISE")
+        XCTAssertEqual(request.codeIdentity, CodeIdentity.empty)
+        invalidRecaptchaExpectation.fulfill()
+        do {
+          try self.rpcIssuer?.respond(
+            serverErrorMessage: "INVALID_RECAPTCHA_TOKEN",
+            error: AuthErrorUtils.invalidRecaptchaTokenError() as NSError
+          )
+        } catch {
+          XCTFail("Failure sending response: \(error)")
+        }
+      }
+
+      do {
+        _ = try await provider.verifyClAndSendVerificationCodeWithRecaptcha(
+          toPhoneNumber: kTestPhoneNumber,
+          retryOnInvalidAppCredential: false,
+          uiDelegate: nil,
+          recaptchaVerifier: mockVerifier
+        )
+      } catch {
+        // Check for the correct error
+        let underlyingError = (error as NSError).userInfo[NSUnderlyingErrorKey] as? NSError
+        let rootError = underlyingError?.userInfo[NSUnderlyingErrorKey] as? NSError
+        XCTAssertEqual(rootError?.code, AuthErrorCode.invalidRecaptchaToken.code.rawValue)
+      }
+
+      await fulfillment(of: [invalidRecaptchaExpectation], timeout: 5.0)
+      try internalFlowRetry(function: #function, goodRetry: true)
+    }
+
     /** @fn testVerifyPhoneNumberInTestMode
      @brief Tests a successful invocation of @c verifyPhoneNumber:completion: when app verification
      is disabled.