1 point
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iirc it’s all because of legislation that all 3 telcos have to adhere to so they’ll all do the same shit, also Telstra uses a shitty proprietary voip implementation so things like lineageos might not work
2 points
This is true, but the way the telcos have been implementing it is different (even if the specifics of that remain unclear).
I expect some blacklisted devices will become whitelisted in the future on the various networks (and vice-versa). The whole thing has been poorly communicated and rather opaque.
