1) Turn on android developer mode
WASD+ needs to use the developer mode to cast screens and simulate clicks.
Operation in Android phone: Settings -> Developer options -> USB debugging
If you can’t find [Developer Options], please do as follows:
VIVO, OPPO, Xiaomi, Huawei, Samsung, others
2) Connect mobile phone and computer with data cable
Try to use the original data cable.
If connecting to the computer does not work, please change the data cable or change a different computer USB port.
3) Allow computer debugging
In the pop-up box of the mobile phone, please check [Allow USB debugging].
4) If the pop-up box of step 3 does not pop up, please change other connection methods
Please change to other connection methods such as: [File Transfer], [MTP], [Charge Only], etc.
5) Win7 or a small part of Win10 does not have a mobile phone driver, please install it
After the phone has USB debugging turned on, connect it to the computer, in the computer: Computer -> Properties -> Device Manager
Check whether the mobile phone is correctly recognized. If [ADB Interface], [HDB Interface], or [unknown device] appears, or there is an [exclamation mark] on the mobile device, you need to install the mobile phone driver on the computer.
ADB Driver install tutorial: https://developer.android.com/studio/run/oem-usb