Use APKPure App
Get Home Automation with Arduino old version APK for Android
Control your Appliances wirelessly
Strings that are sent when a button is pressed:
For Device 1:
"on1"
"off1"
For Device 2:
"on2"
"off2"
For Device 3:
"on3"
"off3"
For Device 4:
"on4"
"off4"
https://github.com/Rupakpoddar
https://www.youtube.com/RupakPoddar