Have you considered using Termux for this? You’d need to install python and the meshtastic-python client inside Termux, and access the device through Wi-Fi and TCP/IP (for now, I think; USB or BLE will be a bit challenging due to limitations on Android). I think I saw someone trying to get USB through Termux working (aha, I did indeed see someone trying that!), but that’s probably going to be a long shot.