Banner Ads Fill Entire Screen,Banner ad fills entire screen

I'm new to unity ads, so please excuse my incompetence. When using a banner ad, i get the standard 'your ad unit is working' message, but it unfortunately fills up the entire screen. When I launch to testflight or the appstore, will it continue to fill the entire screen, or will it only appear in a rectangle at the bottom of the screen? Thanks! (this is my first forum post),New to using ads in unity, but when my banner ad appears I get the standard ad unit screen, however it takes up the entire screen. When launched to testflight or to the appstore will this only appear as a small rectangle at the bottom of the screen, or will it still take up the entire screen? Thanks!