I also bought the DLINK DCS-5222L because it should have an app working on my Windows Phone 8.1 smartphone. However, while the remote control works properly using my PC browser, there is no way to have that app work appropriately unless I am connected in wireless at home: even with a 4G GSM connection on my smartphone and a fiber ADSL connection at home (where it is connected the webcam), the app often crashes and it is too slow to allows a useful remote control. Please update it and provide a proper way to handle your webcam from Windows Phone smartphone!!