Tune (for Flex Desks) on non MDM enrolled devices with MAM not opening Edge for SSO - Default browser not honored in IOS

Current status is as stated in subject. Android phones can used when changing default browser to Edge which is mandatory for SSO via MAM. Any IOS device is unable to log in since

1. Default browser is not honored by tune (just opens default browser)

2. Unable to do SSO due to wrong browser

Suggested to implement that the phones default browser is used when signing in to the application. We are unable to use Tune due to this and cannot implement Flex Desks.