Your Android device must support USB Host mode to communicate with an Arduino board. Use a USB OTG Adapter to connect your standard Arduino USB cable to your phone's charging port.
To start programming on your mobile device, you generally have two main paths: using a standalone app or utilizing the official cloud-based editor. 1. ArduinoDroid (Highly Recommended) download arduino android
You can download it directly from the Google Play Store or as an APK from trusted sites like Uptodown . 2. Arduino Cloud Editor Your Android device must support USB Host mode
The official Arduino Cloud Editor allows you to code anywhere through a mobile web browser. download arduino android