Turn Your Old Cellphone Into CCTV Camera and MonitorPrepare two phones and install app on both devices. Set one phone as the CCTV Viewer and one as the CCTV Camera, and enjoy simple security. Watch the high-quality live video from anywhere. 24/7 live stream. Works smoothly via Wi-Fi, 3G, and LTE. Sell the phone, and maybe you can buy a cup of coffee. Keep the phone, you have a home security system.