setPhoneNumberValidityChangeListener method gives error even on entering last valid digit of a phone number

In Inida, a 10 digit mobile number is a valid number but the moment I enter 10th digit, ccp gives me error that this number is not valid.
I am using "ccp.setPhoneNumberValidityChangeListener" method to check if number is valid or not.
Is there anything I can do to make it work properly in my project ?
Please let me know.