I plug my phone in at night near my bed, and usually it’s been on low power mode by the evening since it’s been used all day.
Then when gets up to 80% charge, it lights up excitedly, bragging about how CHARGED UP it is.
Usually this is around midnight, which is when you definitely don’t want to be woken up by flashing lights next to your face!

But there it sits on my nightstand, having a little solo iPhone party about how it’s FULLY CHARGED!

I don’t know why it’s so impressed with itself.
It’s at EIGHTY PERCENT. That’s like a B MINUS.
Get over yourself, iPhone!