The "notification tab" refers to a section or area on an electronic device or website where you can find updates or alerts about new messages, events, or notifications that require your attention. Full definition
In fact, lively Facebook group discussions end up getting featured in the user notification tab, which drives an enormous amount of «free» post visibility. (inc.com)
ASUS altered the pull - down notification tab. (mobilegeeks.com)
We also like the augmented Notification tab, which allows you to easily toggle a number of the most used settings, such as wireless connections (Wi - Fi, Bluetooth and GPS), brightness, auto rotation and sound. (laptopmag.com)