What does 5G do for my iPhone?

5G Auto: Enables Smart Data mode . 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.17 Mar 2022

None of the new iPhone 12 models come without 5G connectivity , whether you have 5G service in your area or not. Anyone who wants a device that’s 4G-only will have to opt for an older model, like the $399 iPhone SE or last year’s iPhone 11, now priced at $599.29 Eki 2020

Turn off 5G on iPhone by opening Settings, tapping Mobile > Mobile Data Options > Voice & Data, and selecting an alternative connection . Your iPhone will automatically turn off 5G if a 5G tower is unavailable.