Element Call link not opened by Element X on recent Android device

[bmarty]

Steps to reproduce

1. Try to open a link such as https://call.element.io/TestElementCall on a recent Android device
2. Observe that the link is opened in the browser

Outcome

What did you expect?

Element X Android open and host the Call.

What happened instead?

The link is open in the web browser since https://call.element.io/.well-known/assetlinks.json is not returning expected Json but rather is trying to create a call.

Operating system

Android

Browser information

No response

URL for webapp

https://call.element.io/TestElementCall

Will you send logs?

No

[toger5]

I expected the desired bahaviour to be:
Link opens in the browser and shows you a bottom sheet with the option to open the app?

This might be sth we removed recently however? Since the usage of links will hopefully transition to matrix.to links and ppl joining with there verified accounts. Only for guest access we will have links (so only for users on on matrix, so they will not have an element app anyways.)

[bmarty]

Yes, the system may display a popup to let the user choose an app like below (note, this is the second type of popup and on an old device - API 25):

But it will not do if the system does not trust Element X to be able to open the link, which is the purpose of https://call.element.io/.well-known/assetlinks.json

EDIT: first type of popup (the first time it is displayed, on API 29):

[hughns]

FTR, plan is to change how EC is deployed to reinstate the missing .well-known files.