Simple project for work together ESP01S and mobile device with Android 7+. This project allows you to control the light of the built-in LED of ESP - ON, OFF and set brigthness. ESP work as server(AP with SSID: Lights*(xxxxx), password: 1234567890 ). The server recognizes the requests addressed to it and according to them can execute a direct command (ON, OFF) or send a management interface. If changes are made to the settings, they are saved in the EEPROM after disconnecting. In case of power loss, the settings are read by the EEPROM.
If use IoT oneScreen to follow next picture: