Use APKPure App
Get ESP8266 smart switch old version APK for Android
Diese App Steuerung wechselt für ESP8266 Minimodul über WiFi-Modus.
First upgrade your module modified sdk 0.9.2 switch mode demo firmware the web link.
and Android connected the AP.
This app control the gpio2 switching through wifi.
Added reverse mode,
Check reverse mode and then sync press.