Help.....I have "this phone has been lost or stolen" message

I have a nexus 4. I have problem with GPS connection and I was trying to go in safe mode to check if the problem comes from applications…while going to safe mode something strange happen…I did not have the usual message to go…I rebooted…sim pw ok…lock pw ok…then the loud voice came “this phone is lost or stolen” and for a moment on top-left of screen avast logos appear…i tried to unistall avast free…in my memoryI never download avast anti teft. If i go in safe mode no voice message message. I have all my business number on this phone… I need help…Thanks

update: I found my avast username and pw, can reinstall avast and use the pw to fix?

…fixed…

Hello!

so you found a solution on your own? fine!

I’m glad it worked for you.

Have a nice weekend,

Werner