My new iPad Pro 2021 works with 5G, and my carrier contract is unlimited data, but there is no 5G signal in my neighborhood. But I visited Akihabara today and brought my iPad with me and tested. Great download speed I think!
A detailed image for this result can be found here: Speedtest by Ookla - The Global Broadband Speed Test
Test Date: Sep 19, 2021 12:40 PM
Download: 617 Mbps
Upload: 115 Mbps
Ping: 23 ms
Connection Type: Cellular
Server: Tokyo
External IP: 126.167.168.255
Internal IP: 10.46.63.243
Latitude: 35.6987215411466
Longitude: 139.774026129702
http://maps.google.com/maps?f=q&q=35.69872154114661,139.7740261297016