I used to give google duo 5 stars as it was great. I use it to talk to my baby daughter while I'm away at work and sometimes that's more than i am at home but the last month or 2 i constantly miss calls from her as my phone does not even ring when she calls. All my volumes are up as i have no issues with my normal phone and all notifications and permissions are on.. I've searched everywhere for a solution and i can't find one.