Android - Cordova - Arduino - serial communication via USB (both ways)

Do's and Dont's of USB to Serial Communication between Arduino and Android phone MIT app inventer

Arduino Android Serial Communication using OTG cable

Use usb-serial-for-android app to send data from your phone to arduino or any serial device

SHORT TEST - Android - Arduino Communication via USB Serial Connection

Tutorial : How to use : USB OTG Bridge Serial UART for APP Inventor 2 and ARDUBLOCK

Arduino & Android communication using OTG - Android to cloud

Setting up OTG communication with MIT app inventor