Where’s my printer in Windows 10 Mobile?
You must be sure that printer is turned on and connected to the same WiFi network as your phone. If you still can’t find it, check if your printer is compatible with Windows 10 Mobile.
If your computer is having problems printing, try using the Printer troubleshooter to fix the problem. It makes sure that a printer is connected to your computer, and it checks for common issues such as whether the printer has enough paper and toner to complete printing your document.
Note: To make sure you have the most up-to-date troubleshooters from the Windows Online Troubleshooting Service, your computer should be connected to the Internet. For more information, see Troubleshooting in Windows.
Open the Printer troubleshooter by clicking the Start button Picture of the Start button, and then clicking Control Panel. In the search box, type troubleshooter, and then click Troubleshooting. Under Hardware and Sound, click Use a printer.