Channel-21 is an Android app developed by Network TwentyOne International Inc. (7320 McGinnis Ferry Road Suwanee, GA 30024 United States).

Channel-21 first became available on 20 Feb 2015. It is estimated that Channel-21 has been downloaded between 10000 and 50000 times from the Play Store.

Channel-21 1.1.9 requires the following permissions:

Allows applications to access information about networks.

Allows applications to access information about Wi-Fi networks.

Allows applications to change Wi-Fi connectivity state.

Allows an application to expand or collapse the status bar.

Allows access to the list of accounts in the Accounts Service.

Allows an application to install a shortcut in Launcher.

Allows applications to open network sockets.

Allows an application to read from external storage.

Allows access to the vibrator.

Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.

Allows an application to write to external storage.