why cant i answer my phone with the green receiver after the last update

[Android Central Question]

after the last update I cant use the green receiver to answer my Samsung galaxy S9 i have too use the volume up button, no other choice

 

[B. Diddy]

Welcome to Android Central! Is this when you get a call while actively using the phone (i.e., the incoming call notification appears at the top of the screen), or is this when you get a call while the screen is asleep?

Try wiping the cache partition: https://support.t-mobile.com/docs/DOC-37180