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I somehow feel wealthy when my phone and headphones are both at 100% charge together
(self.showerthoughts)
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. A showerthought should offer a unique perspective on an ordinary part of life.
iPhone XR already did this. Looking at the history, the feature may have been present as early as iPhone 6. Although that may have come with a retroactive IOS update.
I stand corrected, looks like it was iOS 13 and newer that offered support for this, so it could go all the way back to the SE.