Pixel 2 is loking when i make a call

[Android Central Question]

I've been having lots of problems with my pixel 2 after updating... when i meke a call my screen loks and doesn't unlok anymore.
And when using my car bluetooth i can't listem to whatsaap audios. Doesn't anyone else is problems?
I'm using it on Brazil, and until know im very upset with my buy, pixel 1 is far better....