There are several ways you can remotely control a Windows device from your smartphone:
Remote Desktop: You can use the Remote Desktop app on your smartphone to remotely access and control a Windows device. To do this, you will need to set up Remote Desktop on the Windows device and install the Remote Desktop app on your smartphone.
TeamViewer: TeamViewer is a remote access and control software that allows you to remotely access and control a Windows device from your smartphone. To use TeamViewer, you will need to install the TeamViewer app on both your smartphone and the Windows device.
Chrome Remote Desktop: Chrome Remote Desktop is a free remote access and control tool that allows you to remotely access and control a Windows device from your smartphone. To use Chrome Remote Desktop, you will need to install the Chrome Remote Desktop extension on the Windows device and the Chrome Remote Desktop app on your smartphone.
Regardless of which method you use, you will need to be connected to the internet on both your smartphone and the Windows device in order to remotely control the device. You will also need to have the necessary permissions and credentials to access the Windows device.