On ios. The app is not full screen

Removed viewport-fit=cover from the index file in , with it generally stripes above and below.
Without it, on iphone 8 - it’s normal, on 12.13 - somehow it’s also not full screen. Who faced? There is a solution? Screenshot below.
P.S. - I think that it is also necessary to register in , just what?
I use F7(v5). Thank you in advance.