Using kitchen sink application or the following source:

Code:
	Ext.setup({
    		tabletStartupScreen: 'tablet_startup.png',
    		phoneStartupScreen: 'phone_startup.png',
    		icon: 'icon.png',
    		glossOnIcon: false,
    		onReady: function()
    		{
    			var pnl = new Ext.Panel({
    				fullscreen: true,
    				items: [
							{
								id: 'map_canvas',
								xtype: 'map',
								useCurrentLocation: true
							}]
    			});
    			pnl.show();
    		}

    	});
Two touch zooming of the map does not work on either Android or Iphone by default.