December 31, 2016 is the announced end date from AT&T. This from an Infiniti blurb upon entering a website about got to use the service:
Driving is serious business. Only use Infiniti Connection™ and Infiniti Connection Plus services when safe to do so. Services require compatible 2G GSM/GPRS cellular network provided by AT&T. 2G cellular network 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 Infiniti’s control. AT&T has announced that on December 31, 2016, AT&T will terminate 2G network availability. Like other devices that rely on 2G network coverage, once the 2G network is terminated, Infiniti Connection and Infiniti Connection Plus services will not function unless equipment replacements, upgrades, or alternative 2G network coverage are available at that time, which Infiniti cannot guarantee. Infiniti not responsible for associated costs that may be required for continued operation due to cellular network termination (including equipment upgrades, if available, or roaming charges on alternative networks). Certain vehicle services, including Google compatible services, provided by independent companies not within Infiniti’s control and are subject to change without notice or liability to Infiniti and its affiliates and agents. Subscription Agreement required to enroll. Initial 12 months, beginning on your date of purchase, included complimentary. Subsequently, your credit card (if on file) will be charged at the then current subscription rate and your service will continue for 1 year periods under the terms of your Subscription Agreement, or until 2G coverage is terminated on December 31, 2016 (if equipment upgrades or roaming charges are not available by that date). Standard text rates and/or data usage may apply. Terms and conditions of Subscription Agreement apply.