Yes, you can access the Fiori on your smartphone. There are many ways how you can access Fiori on the mobile. Generally, the Fiori is accessed using a URL. One can simply enter the Fiori URL in the browser on your mobile to access the Fiori launchpad to access the required Fiori applciations. From an existing Fiori launchpad on your server, you can create a Fiori app. Or, via the SAP Fiori Client, you can opt to access your Fiori launchpad entirely online, by through the SAP Fiori Client from any of the commercial app stores such as Google play store or Apple app store, or by customizing an enterprise-signed version.