Appium : Clear a field

Question

I have my login screen in app now. Each time the app is launched in screen the mobile number is pre filled with the older text.

I just want to know I have tried:

Answer 1

    WebElement element2 = appiumDriver.findElement(By.xpath(element));
        element2.sendKeys(Keys.CONTROL + "a");
         element2.sendKeys(Keys.DELETE);