When adding a webapp to the homescreen no login via Google is possible anymore. The reason behind disallowed_useragent is clear, but how to solve this?
I don’t think there’s a solution for it unless either Google or Apple changes things. For now, the web application should most likely have to disable the possibility to run in this mode by turning off:
<meta name="apple-mobile-web-app-capable" content="yes"/>
This answer in SO has additional information on the subject.
Google offers OAuth for iOS, could this type of authentication be used by Auth0 in the case?
Google offers OAuth for iOS, could this type of authentication be used by Auth0 in the case?
The original question was about a web application (not native) added to the homescreen so I don’t believe that would be applicable, but I might be missing something.