Hi Selvi,
Can you try scroll on iOS app with below strategy...
driver = new IOSDriver(new URL("http://127.0.0.1:4725/wd/hub"), capabilities);
WebDriverWait wait = new WebDriverWait(driver,150);
driver.findElementByAccessibilityId("UICatalog").click();
TouchAction act = new TouchAction(driver);
act.press(driver.findElementByAccessibilityId("Sliders")).moveTo(driver.findElementByAccessibilityId("Alert Controller")).release().perform();
Thread.sleep(4000);
// Just make sure ur locator is correct, area should be scrollable and it should work....
If u have some text in content-desc attribute of Node then above code will work...
Try with className/xpath

