Download ADB from

1. Run cmd commend and go to the adb save folder that connect to device via Adb over TCP, if use Adb wire, skip this step

    adb connect {ip} for example:  adb connect

2. Take screen shot and save to device

    adb shell screencap -p /sdcard/0.png

3. Take the image from device to PC, 0.png would save to the current folder

    adb pull /sdcard/0.png