Accessibility: Select to Speak
The Accessibility settings on Android aren't something most think about, but for those who need it, it's extremely important. The talkback feature where our phones read what's on the screen aloud is great for the visually impaired, and other situations.
On Android 7.0 Nougat there is a small floating icon that you tap, select text, and it is read aloud. Oreo puts an accessibility icon next to the Multitasking softkey. When you tap the softkey, a floating icon shows up which has a play button and stop button.
This reads aloud everything instead of just one area of text you select if preferred. Additionally, there's a repeat, skip or speed up playback option as well. This is great for those who need it.