User Guide for the Polycom VVX 1500 C Business Media Phone for Cisco Unified Communications Manager (SIP)
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To clean the touch screen:
1. Tap > Settings > Basic > Screen Clean.
The screen is disabled. The message “Touch screen is disabled. Press any
key to exit” displays.
2. Wipe the glass with a clean, lint-free cloth.
3. To enable the touch screen again, press any key on the phone console.