CARWINGS requires a compatible 2G GSM/GPRS cellular network provided by AT&T. 2G cellular network is not available in all areas and/or available at all times. Cellular technology is evolving, and changes to cellular networks provided by independent companies are not within Nissan's control. Like other devices that rely on 2G network coverage, once the 2G network is terminated, CARWINGS will not function unless equipment replacements, upgrades, or alternative 2G network coverage are available at that time, which Nissan cannot guarantee. Nissan not responsible for associated costs that may be required for continued CARWINGS operation due to cellular network termination (including equipment upgrades, if available, or roaming charges on alternative networks).
https://owners.nissanusa.com/nowners/navigation/faq
https://owners.nissanusa.com/nowners/navigation/faq