The 4g device blockout has been entirely based on feel and not actual compatibility. Official statement from Xiaomi stating it clearly.
(xiaomitech.com.au)https://xiaomitech.com.au/blogs/news/notice-on-3g-shutdown-and-network-connection-for-xiaomi-devicesNone of our 3 personal devices are compatible. At least one business phone still works. OH WELL.
The networks are not actually shut down, but they are just blocking phones based on semi arbitrary lists.
