I have Q-see 9 channel DVR. Can I use the viewer for Android?
No, you can't use the PC Viewer on Android. Instead, use one of the applications listed in Play Store. There are many apps compatible with all sorts of DVR systems.
Google Play Results: https://play.google.com/store/search?q=dvr+viewer&c=apps&docType=1&sp=CAFiDAoKZHZyIHZpZXdlcnoCGACKAQIIAQ%3D%3D:S:ANO1ljLG1gc
