After upgrading, you'll see the following improvements to the Android operating system and other apps.
Previously, in quick settings, you could tap 
Now when you tap 
Now, even when your mobile network is unavailable, you can send SMS. Your phone will automatically connect to a satellite, letting you send text messages.
You’ll see a message on your lockscreen and in the Messages app 
Quick settings now has a tile you can add to control hearing devices. Tap the tile to peek at hearing device battery levels, change device settings, and turn other audio features like Live Caption on or off.
You can also switch between preset sound profiles that automatically adjust your hearing device based on your listening environment. Get presets for:
Find Device can now help you locate: