how to check if a phone number is valid whatsapp number in Android?

Question

so I have an edit text that will be used as a view to get phone number from user, say if the phone number is +6123456789, I want to check if this number has whatsapp number or not,i want to avoid the user to input fake whatsapp number, how to do that?

Answer 1

You must have: Facebook Whatsapp Business Api for contacts check

Once you have a valid business account you could then query the Contact . You will get all the details in the documentation .

Hope it works for you!