Universal Link is not working on properly on iOS 13 (AASA not downloaded)

Question

Universal Link was working fine on iOS 12 but I ran into issues when I updated to iOS 13.1 yesterday. URLs that\'s supposed to open the app when tapped are just opening up in th

Answer 1

I had the same issue with iOS 13 only and it turned out that since iOS 13 the appID entry is now case sensitive. My app's bundle identifier and the entry in the appID of the AASA file mismatched only in casing. Example:

Bundle ID: TEAMID.com.company.EXAMPLE AASA entry:

{
  "applinks": {
    "apps": [],
    "details": [
      {
        "appID": "TEAMID.com.company.example",
        "paths": [ "*" ]
      }...

Needed to fix the appID in AASA file and my problem was gone.