I have a Web page with an anchor that has href="whatsapp:+(xxxxxxxxx)", if i click on it on my iPhone (iOS 9), it opens WhatsApp in the chat view for that contact (i can see all the chats that i did with the contact). However, if i do it programmatically (same url), it only opens WhatsApp on the chat tab.
I've tried other ways of doing this (using the Address Book api, and using the "whatsapp://send?abid=RECORDID"), but all fail.
Any help will be much appreciated.