Early iPhone models used Apple's 30-pin connector, but this was killed off in 2012 with the iPhone 5 and its Lightning port.
It's been replaced by the Action Button, which first appeared on 2023's iPhone 15 Pro and iPhone 15 Pro Max.
Now it's gone, meaning that the 2022 iPhone SE is probably the last Apple phone ever to feature a Home button.
But in 2017, the iPhone X introduced the mug-scanning Face ID as a new way to unlock your iPhone.
That's because the iPhone 16e is sort of a spiritual successor to the iPhone SE.