How to Take Samsung Galaxy Phone Screenshots from your Computer
Step 1. On your computer, make sure you have installed the latest SideSync program.
Step 2. On your phone, make sure you’ve downloaded SideSync from the Google Play store.
Step 3. Connect your phone to your computer using the USB data cable.
Step 4. Open SideSync on your computer and phone to have them connected.
Step 5. On your computer’s SideSync, click Phone screen.
Step 6. Tap v on your phone screen window, and select Capture.
Step 7. The screenshot images are saved to the folder that you’ve set in the SideSync settings.