[AC Question]

I had an android update some days back, which i had done today and ever since i had done my google dialer has stopped working and unable to make or recieve calls.
It was not an major upgrade and stayed with the same version 5.1.1 which i had earlier too in my Nexus-5. This update was all about some securuty fixes. And while the upgarde was in progress recieved an error and i had to power off the phone to make it functional. After the reboot am facing the dialer issue.
Tried third party dialers too and nothing helpled.

Even factory reset my phone ad wiped cache in recovery mode and that didnt help either.

Any thoughts appreciated