You can download the SmartNews app through this link.
Adding the DW channel in SmartNews is easy! Just tap on Discover at the bottom of your screen. From here, you can use the Search bar to look for DW. After you've found the channel, click Add to add it as a new tab. It will appear on the far right of your other tabs in News. To rearrange your tabs, scroll to the far right of your tab bar and click the Edit tab.