Can't able to locate an element using appium?

I was trying to select a particular element in my mobile app to enter mobile number.in my app i have done all other works..but i can't able to locate my Mobile number field to enter Mobile number. currently it was performing the click operation on to a country code spinner prefix to my mobile number field..

The input field in my app is given below

The UI automator view is given below

The codes i tried are

 driver.findElement(By.xpath("//android.widget.EditText[@text='Mobile Number']")).sendKeys("8129497946");

and

driver.findElement(By.xpath("//android.widget.EditText[contains(@resource-id,'ext-element-65')']")).sendKeys("8129497946");

any solutions?