Basic function introduction:
1. Stream Videos over WIFI or 3G/4G
2. View up to 16 live video streams
3. Device management.
4. Snapshot and browse picture
5. Record and playback video
6. PTZ control
7. Landscape and Portrait orientation support
8. Two-way talk-back
9. Digital ZOOM
10. Using QRcode to add new device
……
Fix some bugs
9Apps 4.9
