What do I need to use the iPhone App? digitalSTROM Support October 01, 2018 10:49 Updated Follow To use the digitalSTROM iPhone App you need a digitalSTROM Server (dSS) and a WLAN/Wi-Fi Router in your home network. Related articles Where can I find the iPhone App? What needs to be done to use the new app? What functions do Doorbird door intercoms offer? What do I do if the data is not loaded? Where can I find more information about the app?