A free app for Android, by DroidCoolApps.
This app lets you make a video recording of whatever is on the screen of your Android device in the background, even if you don’t have the app open. This is useful if you want to make a video recording of something that is happening on your phone but is not visible to you.
To use this, just install the app and make sure that it is set to record in the background. You can then choose what to record, and how long to record it for. You can record it to your phone’s internal memory or to an external SD card, which can be inserted into a USB port.
You can also choose to start recording right away or after a delay. If you start recording right away, the app will record it as soon as it is ready. If you delay, the app will record it at the time you want, and the recording will continue until it is finished.
The recording will be saved to your device’s internal memory, or an external SD card, depending on what you choose.