app.scss

// workaround for https://github.com/ionic-team/ionic/issues/13294
// probably breaks iPhone X support
.ios ion-nav > .ion-page > .toolbar.statusbar-padding:first-child,
.ios ion-nav > .ion-page > ion-header > .toolbar.statusbar-padding:first-child,
.ios ion-tab > .ion-page > .toolbar.statusbar-padding:first-child,
.ios ion-tab > .ion-page > ion-header > .toolbar.statusbar-padding:first-child,
.ios ion-tabs > .ion-page.tab-subpage > ion-header > .toolbar.statusbar-padding:first-child,
.ios ion-menu > .menu-inner > .toolbar.statusbar-padding:first-child,
.ios ion-menu > .menu-inner > ion-header > .toolbar.statusbar-padding:first-child {
  padding-top: calc(20px + 4px) !important;
  min-height: calc(44px + 20px) !important;
}

.ios ion-nav > .ion-page > ion-content.statusbar-padding:first-child .scroll-content,
.ios ion-nav > .ion-page > ion-header > ion-content.statusbar-padding:first-child .scroll-content,
.ios ion-tab > .ion-page > ion-content.statusbar-padding:first-child .scroll-content,
.ios ion-tab > .ion-page > ion-header > ion-content.statusbar-padding:first-child .scroll-content,
.ios ion-tabs > .ion-page.tab-subpage > ion-header > ion-content.statusbar-padding:first-child .scroll-content,
.ios ion-menu > .menu-inner > ion-content.statusbar-padding:first-child .scroll-content,
.ios ion-menu > .menu-inner > ion-header > ion-content.statusbar-padding:first-child .scroll-content {
  padding-top: 20px !important;
}

.ios ion-nav > .ion-page > ion-content.statusbar-padding:first-child[padding] .scroll-content,
.ios ion-nav > .ion-page > ion-content.statusbar-padding:first-child[padding-top] .scroll-content,
.ios ion-nav > .ion-page > ion-header > ion-content.statusbar-padding:first-child[padding] .scroll-content,
.ios ion-nav > .ion-page > ion-header > ion-content.statusbar-padding:first-child[padding-top] .scroll-content,
.ios ion-tab > .ion-page > ion-content.statusbar-padding:first-child[padding] .scroll-content,
.ios ion-tab > .ion-page > ion-content.statusbar-padding:first-child[padding-top] .scroll-content,
.ios ion-tab > .ion-page > ion-header > ion-content.statusbar-padding:first-child[padding] .scroll-content,
.ios ion-tab > .ion-page > ion-header > ion-content.statusbar-padding:first-child[padding-top] .scroll-content,
.ios ion-tabs > .ion-page.tab-subpage > ion-header > ion-content.statusbar-padding:first-child[padding] .scroll-content,
.ios ion-tabs > .ion-page.tab-subpage > ion-header > ion-content.statusbar-padding:first-child[padding-top] .scroll-content,
.ios ion-menu > .menu-inner > ion-content.statusbar-padding:first-child[padding] .scroll-content,
.ios ion-menu > .menu-inner > ion-content.statusbar-padding:first-child[padding-top] .scroll-content,
.ios ion-menu > .menu-inner > ion-header > ion-content.statusbar-padding:first-child[padding] .scroll-content,
.ios ion-menu > .menu-inner > ion-header > ion-content.statusbar-padding:first-child[padding-top] .scroll-content {
  padding-top: calc(16px + 20px) !important;
}

.ios ion-nav > .ion-page > .toolbar.statusbar-padding:first-child ion-segment,
.ios ion-nav > .ion-page > .toolbar.statusbar-padding:first-child ion-title,
.ios ion-nav > .ion-page > ion-header > .toolbar.statusbar-padding:first-child ion-segment,
.ios ion-nav > .ion-page > ion-header > .toolbar.statusbar-padding:first-child ion-title,
.ios ion-tab > .ion-page > .toolbar.statusbar-padding:first-child ion-segment,
.ios ion-tab > .ion-page > .toolbar.statusbar-padding:first-child ion-title,
.ios ion-tab > .ion-page > ion-header > .toolbar.statusbar-padding:first-child ion-segment,
.ios ion-tab > .ion-page > ion-header > .toolbar.statusbar-padding:first-child ion-title,
.ios ion-tabs > .ion-page.tab-subpage > ion-header > .toolbar.statusbar-padding:first-child ion-segment,
.ios ion-tabs > .ion-page.tab-subpage > ion-header > .toolbar.statusbar-padding:first-child ion-title,
.ios ion-menu > .menu-inner > .toolbar.statusbar-padding:first-child ion-segment,
.ios ion-menu > .menu-inner > .toolbar.statusbar-padding:first-child ion-title,
.ios ion-menu > .menu-inner > ion-header > .toolbar.statusbar-padding:first-child ion-segment,
.ios ion-menu > .menu-inner > ion-header > .toolbar.statusbar-padding:first-child ion-title {
  padding-top: 20px !important;
  height: calc(44px + 20px) !important;
  min-height: calc(44px + 20px) !important;
}

@media only screen and (max-width: 767px) {
  .ios .modal-wrapper > .ion-page > ion-header > .toolbar.statusbar-padding:first-child {
    padding-top: calc(20px + 4px) !important;
    min-height: calc(44px + 20px) !important;
  }
  .ios .modal-wrapper > .ion-page > ion-header > ion-content.statusbar-padding:first-child .scroll-content {
    padding-top: 20px !important;
  }
  .ios .modal-wrapper > .ion-page > ion-header > ion-content.statusbar-padding:first-child[padding] .scroll-content,
  .ios .modal-wrapper > .ion-page > ion-header > ion-content.statusbar-padding:first-child[padding-top] .scroll-content {
    padding-top: calc(16px + 20px) !important;
  }
  .ios .modal-wrapper > .ion-page > ion-header > .toolbar.statusbar-padding:first-child ion-segment,
  .ios .modal-wrapper > .ion-page > ion-header > .toolbar.statusbar-padding:first-child ion-title {
    padding-top: 20px !important;
    height: calc(44px + 20px) !important;
    min-height: calc(44px + 20px) !important;
  }
}

This is 100% working, thank you

Thanks , it fixes nav-bar align issue on iphone

GOD, solved my problem.