When 5G speeds don’t provide a noticeably better experience, your iPhone automatically switches to LTE, saving battery life . 5G On: Always uses 5G network when it’s available. This might reduce battery life. LTE: Uses only LTE network, even when 5G is available.
Read moreWhich is better LTE or 5G?
In a nutshell, because 5G uses a different spectrum than 4G LTE , it can deliver stronger and faster connections, higher capacity for traffic, as well as latency as low as 1ms.
Read more