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

def Clear(self):
    self.driver.keyevent(123)#Move Cursor Last one
    time.sleep(2)
    for i in range(10):
        self.driver.keyevent(67)#Deleted Keyboard 
        self.driver.implicitly_wait(60)