Temporary contents during initial load

Hi,

the initial load of my UI5 application takes a couple of seconds on older smartphones. During the loading time, I would like to present some intermediate contents. It is pretty simple to get stuff on the index.html page by using the sap.ui.getCore().attachInit(...) method. For example:

sap.ui.getCore().attachInit(function () {  new sap.m.Text({            text: "Hello World"  }).placeAt("content");
});
sap.ui.getCore().attachInit(function () {  sap.ui.require([  "zink/model/mockserver",  "sap/m/Shell",  "sap/ui/core/ComponentContainer"  ], function (mockserver, Shell, ComponentContainer) {  mockserver.init();  new Shell({  app: new ComponentContainer({  name: "zink",  height: "100%"  })  }).placeAt("content");  });
});

Problem is, that the intermediate part remains on the page even after the contents of my application has been loaded and displayed. I would like to remove the intermediate contents once the real contents is loaded. Any suggestions how I can achieve that?

Thanks!