check the operating system of your Android. It must be at least version 4.2. Also, have you tried to remove the app, reinstall it, reset the orange button on the doorbell? The troubleshooting team at Ring can help walk you through the steps. But first check that your phone's operating system is compatible. That's what caused probems for me and I had to get a new phone -- my older model Android just couldn't be updated enough to make it compatible. The app worked fine on my iPad and laptop, but I always had to be connected to WiFi on those devices. With the phone, your cellular network keeps you connected to the doorbell.