Phones lie about being at 95-100% charged, because it's bad to keep charging them when at 100%, it stops, waits for it to go down over hours, and charges again.
But then people complain it's not charged to 100% even though they left it charging all night, and because it's easier to lie to people than teach them stuff, they lie.
But then people complain it's not charged to 100% even though they left it charging all night, and because it's easier to lie to people than teach them stuff, they lie.