free Andriod app for home automation/IoT control.
download android app and install then download esp8266 code then edit some code like wifi user name and password as your router and mobile hotspot then code upload to the board.
open Andriod app on your mobile write your current router IP address then click to on/off the device remotely. find IP off your router after uploading the code into esp8266 board then use Arduino ide to serial monitor check baud rate same as your code and serial monitor then press esp reset button.
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