I used ArduinoDroid on MXQ (Android TV BOX) with no big problems.
The Android on MXQ is 4.4.2 so I used an older version version of ArduinoDroid (sob).
Using it I developped an app to control Arduino UNO board via USB from PHP (USPphpTunnel)
see it here GitHub - msillano/USBphpTunnel: Android app for MXQ TV box to control an Arduino board via USB from PHP.
About Arduino console terminal: the only terminal app that worked with my Arduino board is
"Serial USB terminal" https://play.google.com/store/apps/details?id=de.kai_morich.serial_usb_terminal.
thanks.