-1

This question already has an answer here:

The four dot animation is endlessly running after Android 6 update in Nexus 5.

marked as duplicate by Firelord, Izzy, Matthew Read Nov 2 '15 at 16:15

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

1

I had this same problem on my Nexus 6 when I 'upgraded' to Android 5.0 and there was unfortunately nothing that could be done by the technicians I sent it to so they replaced it for me, free of charge.

What I would suggest you try first is doing a hard reset of your phone (Instructions to do so here) and see if that works. Failing that, talk to someone at Google (who'll probably tell you to do the same thing) and then, failing that, take it to a phone repair place and ask them to take a look at it for you.

Not the answer you're looking for? Browse other questions tagged or ask your own question.