I currently have a Samsung Galaxy S8 and the notifications on my Edge 830 are working great and I can reply, however I am moving over to the iPhone XR
I realise SMS replies doesn't work on iPhone but does two way messaging work on WhatsApp and messenger which us typically what I use.
I've searched the forum and the answer seems to be mixed with most people saying its not possible because of iOS limitation but my understanding is that only affects the in build SMS application, WhatsApp even has an article on how to ingrgrate, so can someone confirm if this is working already and if not I wonder if Garmin can comment why they aren't using the provided API?
https://faq.whatsapp.com/en/iphone/23559013
Just to add looking at the apple documentation iMessage integration is also available with iOS 10
https://developer.apple.com/documentation/messages
Many thanks.