A user's enterprise-issued smartphone does not respond to touch after starting up the operating system. Which of the following should a technician try next?

Contacting the vendor is usually done after basic troubleshooting has failed to identify or resolve the issue, as it incurs potential costs and delays.

Replacing the screen assembly is a hardware repair and should only be considered after confirming that the touch screen itself is faulty, not a software glitch or temporary issue.

Confirming the touch screen functionality involves basic troubleshooting steps like restarting the device, checking for physical damage, or performing diagnostic tests to determine if the hardware or software is at fault. This helps isolate whether the issue is with the screen itself, the operating system, or an application.

Restoring to factory settings is a drastic step that erases all user data and configurations; it should be performed only after less invasive troubleshooting steps have failed.