Arduino Android USB Serial Communication With OTG Cable : 11 Steps - Instructables
Amazon.com: ELECABLE USB Type C to RS232 DB9 Serial(9-Pin) Converter Adapter Cable 5ft with a Male to Female Connector, Compatible with MAC OS, Windows, Android, Linux Type C Device (USB C) :
GitHub - ClusterM/usb-serial-telnet-server: Android application that binds a USB serial converter to a Telnet client
Android communicates with Arduino(Duemilanove) via USB-Serial Version I - YouTube
Serial Tutorial - Tutorials - Particle
USB Android Serial - Developer Tools - Particle
Serial USB Terminal software for Cable Tester CCT-01 – Cable Tester
Android Things - Discovering the UART API
GitHub - mik3y/usb-serial-for-android: Android USB host serial driver library for CDC, FTDI, Arduino and other devices.
ProjectProto: Android-Arduino Communication via USB OTG
USB Micro B to DB9 RS232 Universal Serial port Adapter Cable Smartphone Android | eBay
A dirty and quick example of serial port communication in Android | felhr85
Arduino Android USB Serial Communication With OTG Cable : 11 Steps - Instructables