Security updates are done monthly. Though in the past phone makers often bypassed them or took month to update. A lot of people complain and phone makers are finally updating faster. I have pixl so it's not an issue as I get updtes as soon as theya re ready. I got the February security update 3 weeks ago. I'll get the March update around the 5th. When anrdpid Q comes out in October I'll get that as soon as it does.