On an iPhone, you go into Settings > Display > Auto-lock. The Auto-lock screen consists of a list of options. You observe that there is a checkmark next to the “Never” option. You tap the “1 minute” option. You observe that the checkmark has moved to “1 minute” option. You lay down the iPhone without touching the display. The Auto-lock screen is still shown, and the checkmark is next to the “1 minute” option.

If you don’t touch the iPhone again, when will it auto-lock?