@zero_gravitas This guy has a (long) piece about why it's a stupid thing to do in the way it's being done. https://medium.com/@jamesdwho/australias-3g-shutdown-telcos-to-block-working-4g-5g-phones-2bf41e95de8a
Basically 300,000 devices will stop working Monday. And the owners of things like fall emergency panic buttons might not know they don't work until they're needed. Literally could cost lives.
Could also be fun for a lot of Melbourne's MyKi card readers, if they've not managed to swap them all out yet (I did read it wasn't completed yet as they'd not actually got the readers delivered)