2024-10-02 00:00:00 Note: This app only works with CEL-FI COMPASS and Nextivity SHIELD systems. For all other CEL-FI products, use the CEL-FI WAVE app. The WAVE PRO app and CEL-FI COMPASS combine to facilitate and optimize CEL-FI and SHIELD installations. The COMPASS and COMPASS XR use a 3G/4G/5G and 700/800 MHz LMR service scanner to perform wireless network/donor assessments. Connect your COMPASS to a CEL-FI QUATRA system to Activate/Deactivate it, update software, or change Antenna, Band, and Channel settings.