ADB not working or detecting your device on Windows? If Android can't connect via Android Debug Bridge (ADB), fixing this ...

On the smartphone, you will have to enable the USB debugging feature. Whereas, on your Windows PC, you will have to download and install the Android SDK Platform-Tools. What is Fastboot?

After you load it up, it will automatically install the Android Debug Bridge (ADB) — essential for sideloading apps — and ask what Android app you want to install.