fooyukvoon

Hi, Not sure if this is the right place to place this query... Here goes.. I have 2 DVR CCTV systems installed at home and the office. Using the PC over the internet, both systems are viewable. On Android phones and also on Nokia phones on 3G, we are able to see the cameras. I just cant get an Iphone to view the DVR Stream over 3G. Tried a few viewers but none worked. Could it be the Mobile Phone company blocking the stream to the Iphone? Any ideas/suggestions are greatly appreciated. Thanks. Foo Malaysia.