The Australian Government has mandated that telcos block 4G and 5G devices they believe require 3G for calls or emergency calls, using IMEI TAC codes. (You can even have a 'supported' model but an 'incompatible' TAC)
More info:
Use this form to submit the model details for your 4G/5G (Android) device, especially for those that have been told it will blocked or have been blocked. iPhone & iOS Submissions are welcome too!
It will also ask you questions regarding your experience with the shutdown & messaging from your provider.
Everyone is welcome to submit through this form so we can get a snapshot of what's supported and what isn't.
I am collecting information on affected devices to gather some statistics about the devices impacted.
Please provide as much detail as possible.
If you have multiple devices please complete a separate form for each device.
Results are published on a publically accessible Google Sheet with sensitive identifiable info removed.
By completing this form you acknowledge that some of the information provided in this form may be published.
Google Sheet Results - Public Version
Is this Phone Blocked? - 4G/5G Device Blocking Checker
Most Questions are optional and you can complete as many or as few as you wish.
Even though 3G has shutdown, this form is still open to and is accepting submissions as the blocking arrangements are ongoing.
Google Form by JamesDwho
https://medium.com/@jamesdwho