Question: how cctv works in mobile phone?
Answer: Step 1: CONNECT DVR TO MONITOR DIRECTLY. Just connect your CCTV DVR to monitor via VGA or HDMI CABLE. ... 
Step 2: CONFIGURE CCTV DVR SETTINGS. For configuration. ... 
Step 3: NOW CONFIGURE WIFI ROUTER FOR DVR. Open your PC. ... 
Step 4: CONNECT DVR TO WIFI VIA LAN CABLE. ... 
Step 5: CHECK THE SETTINGS. ... 
Step 6: NOW CONNECT TO ANDROID PHONE.