I’m a layman on this topic but watching the Apple video it sounded like 5G has higher power requirements than LTE. He even explained how it switches between them to conserve battery. LTE when you don’t need speed and 5G when you do.
Do not be confused. These technologies are very different to the 5G technology (called “New Radio”) the new iPhone and 5G phones in general are using. They are designed around using as little energy as possible and maintaining connectivity in very difficult conditions to the expense of speed and latency.
