the author of this app says:
TN3270 Emulator, is a client for connecting to mainframes with the telnet 3270 protocol.
- Connection with standard 3270 mainframes,
- Text size configuration through volume buttons,
- Keyboard configuration,
- Physicall keyboard support (arrow keys included)
- You can record a sequence of actions that you perform within it and then replay these actions as many times as you want. This is useful for login or repetitive actions,
- You can record the screens into a SDCard file through camera button,