Please call 1.888.4ONSTAR to talk with an OnStar Advisor about possible solutions.
Once your Unlimited Access Plan is active, your vehicle can access data at up to 4G LTE speeds (see coverage map below). This connection is provided by AT&T and powered by your vehicle’s battery, with a built-in Wi-Fi hotspot that can support up to seven connected devices. It’s a reliable, powerful connection that isn’t dependent on your smartphone.
You can access your infotainment system to download apps and stream music, podcasts and other content directly from your vehicle’s infotainment system. Your passengers can also use your available Wi-Fi hotspot to check email, hold video conferences, post on social media, stream videos or access your favorite websites.
When click the image below, you’ll be directed to Onstar Official site, Unlimited Data Coverage Map information page. Enter your ZIP code and select an OnStar service to check availability in your area. You can also use the zoom tool on the map to pinpoint any location.
Through our partnership, our wireless carriers are committed to network improvements. They constantly monitor and optimize their networks to deliver the best possible wireless service.
There are cellular network limitations, including lack of coverage due to zoning issues with cellular towers, network interference, area population, and gaps in network coverage. There are also external factors, such as vehicle enclosures like parking structures or garages, construction, foliage, terrain, and building obstructions.
OnStar relies on our wireless carrier partnerships and their cellular networks to provide coverage to our customers. Because of this, some vehicles and areas may be impacted by a loss of service, while others may benefit from expanded service.
OnStar partners with multiple wireless carriers to provide coverage across the nation.