Regarding emergency numbers

[amilcar-uptech]

Hello all. Using callkeep and janus_client, we're trying to do calls over SIP. We've only just noticed that trying to call numbers such as 911 takes us to the phone app of the device instead of trying to directly call. I've read up something about the way emergency numbers that are handled in such a way by the OS itself, as well as a list of numbers labeled as emergency as seen here on pages 19 and 20. However, there is a mention of the number 08, and yet our app doesn't quite behave the same on different devices: on a Moto G 9 Plus, dialing this number (or any number starting with 08) seems to work just fine with callkeep, as the app at least tries to start the call; on Samsung devices, it takes the user to the device's phone app (like I mentioned at the start). Has anyone dealt with something similar to this?