AT&T Unlimited Elite® includes 40GB of mobile hotspot/tethering data per eligible line per month. AT&T Unlimited ExtraSM includes 15GB of mobile hotspot/tethering data per eligible line per month. After 40GB for AT&T Unlimited Elite and 15GB for AT&T Unlimited Extra, all tethering data usage for that line, will be slowed to a max of 128Kbps for the rest of the bill cycle. The AT&T Unlimited StarterSM plan does not include mobile hotspot/tethering except for eligible Connected Cars (in car Wi-Fi/vehicle wi-fi hotspots).