I'm not sure, I'm not really interested in remote viewing from my phone. I have everything hooked up and the 4 cameras are working ok, however there are 8 ports and only 4 cameras. The system cycles thru all 8 and I only want the 4 with the cameras. I downloaded the manual and printed it off to a hard copy, but I am tech lingo challenged... eg: I thought TOUR was a demo on how the system could be put together and works.... LOL!