> "4g is between 5Mbps and 12 Mbps (up to 50Mbps in burst mode), while 5g generally starts at 50Mbps."

Yup. I actually regularly get sustained speeds well over 50 Mbps on 4G with carrier aggregation (which some phones call "4G+"). And anything less than 200 Mbps is a bad day on 5G. (Vodafone UK network)

https://www.speedtest.net/result/9898742367