[mcbridematt]

Yes, it is possible to get 600Mbps from LTE, but you need lots of mid-band spectrum - the US operators are quite challenged in that respect, plus CPE capable of carrier aggregation + higher MIMO ('flagship' smartphones generally).

This article provides a good overview of how the Telstra deployment works: https://cellularinsights.com/telstras-gigabit-class-lte-netw...