What kind of phone , where did you buy it and have you installed
any new apps?
it is a htc desire 530. I bought it from Walmart I did install some apps but don't know which one is causing it I tried to un install this Google go z thing app but it won't ... I think I have to factory reset I'm trying to find that info on this site.
Many of these "Free Apps" that are downloaded in Google App and Amazon App store are riddled with these intrusive advertising methods. Each time these ads are displayed on your screen, these companies get paid advertising dollars... If you click on any of their ads... they make even more money. Apps created by reputable companies seldom use these methods, but a factory reset should fix your issue.
Note: Free Apps are seldom free... you usually pay one way or another.