My plan details for mobile hotspot says 15 GB per device. It also says " After 15 GB, Mobile hotspot speed slows to a maximum of 128kbps. " When I called at&t they said once I get to 15 GB of mobile hotspot data it is turned off until next bill cycle. I am confused since other cell phones providers just reduce the speeds of mobile hotspot. If this is at&t new change I will be looking for a new provider. Does anyone know the truth? Or is At&t trying to get people to switch to a 50 GB mobile hotspot plan?