https://www.cnx-software.com/2018/05/04/esp8266-loader-app-allows-you-to-flash-and-debug-esp8266-boards-from-android-smartphones/
https://www.cnx-software.com/2018/05/04/esp8266-loader-app-allows-you-to-flash-and-debug-esp8266-boards-from-android-smartphones/