There needs to be a feature where the phone turns into a mouse trackpad when it is connected to the laptop (ESPECIALLY WHEN IT IS CHARGING THROUGH THE MOUSE PAD) and ofc, the trackpad should be tested as well that it can handle all that phone weight whilst being used and last good 7 years with no problem.
You can get a bluetooth trackpad app on your phone to achieve this. I use Bluetooth Keyboard and Mouse from "AppGround IO" on Android. It has a trackpad, scroll, click buttons, and you set up shortcuts too.
