I was able to WiFi Tether using both the Hotspot Toggle Widget and with FoxFi. I would get an error message saying that I needed to have a Mobile Hotspot or Mobile Broadband Connect subscription, but I would just press the Home button (which would keep the mobile hotspot turned on) and tether away. Fast forward to today...I installed the OTA software that VZW rolled out and proceeded to use the Hotspot Toggle Widget to WiFi tether my Note 3. The same error message popped up, but now when I press the home button, it doesn't work, i.e., the mobile hotspot turns off. Anybody else coming across this problem after installing the latest OTA software update?