My phone freezes on incoming & outgoing calls
Hi everyone! I purchased my google pixel when it was released. However, now it's useless as it freezes whenever i receive or make a call. Phone operates fine till I receive a call and then the phone freezes. It keeps showing the person calling animation and it doesn't go forward nor i can cancel the call. Thr phone completely freezes as soon as someone calls. Speakers and mic dont work. Shutting down the phone is the only option. I don't know what's wrong with the phone. Can't understand whether its the software or hardware.
I've already tried the following things:
1. Resetting and reboot
2. Installation of new software
3. Upgrading to latest os and then downgrading to previous one
4. Going on beta android P
All these things didn't really help. If anyone knows how to solve this problem please let me know.