On Android, many manufacturers have adopted a discrete lock screen notification system that utilizes OLED's unique attributes to display only the bare minimum of information at a glance. (techradar.com)
Another annoyance is the use of full screen notifications that can only be closed by clicking ok. (pocket-lint.com)
The update also adds a new smart lock screen notifications feature that lets users hide notifications on their lock screen. (indianexpress.com)