installed ipa not using full iPhone 6 screen

I built my adhoc .ipa file via the web modeller using my production environment. I loaded it onto my iPhone 6 test device and started it up. It doesn’t use the full screen height and is letter boxing the top and bottom of the screen. Has anyone an idea of what is causing this. Have I missed a setting somewhere in my build or design. I appreciate any help please.
1 answers

Hi Gareth, a screendump would help to give you a better answer, but there are some iOS quirks when building apps. Anyways maybe it's the Simple Menu widget that causes this, see last paragraph here:

In our app I added the bottom property in hybrid app styling:

.mx-hybridapp {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
    bottom: calc(0px - constant(safe-area-inset-top));
    bottom: calc(0px - env(safe-area-inset-top));