Mobile Camera Viewer is a free Android application that provides remote video surveillance by using cameras connected to a cloud service-based video surveillance platform called ExtCam. The app is designed for users whose internet service provider or mobile operator has deployed the ExtCam cloud video surveillance platform. If your ISP has not implemented the service, the application will not work without registration. It is advised to check with your internet service provider to see if they are connected to ExtCam.

The app's interface is user-friendly and allows easy navigation. Once connected to the cloud service, users can access their cameras remotely and monitor their premises in real-time. The app also supports motion detection and allows users to receive notifications when motion is detected. Mobile Camera Viewer is a simple yet effective solution for remote video surveillance needs.