I will tell you how to remote laptop using a smartphone by using google mail and google chrome

The step by step :

  1. Make sure your laptop and smartphone connected with internet connection
  2. Login to google chrome using google mail account
  3. Type chrome remote desktop in the search bar
  4. Install or download the extension and launch it
  5. Setup pins. pins are used to connect laptops and smartphone
  6. Download chrome remote desktop in play store
  7. Make sure your smartphone using google mail account same like in your google chrome browser
  8. Tap your device names
  9. Enter your pin
  10. Congratulation ! you can remote your laptop now