Was on way to pick up kids, all was normal. Halfway there, maps would not load, internet radio stopped. There were no bars at the time. While waiting for the kids, I had cell reception again, (2-3 bars LTE) but no data loaded. I rebooted the main screen, no fix. One way home, cell reception ramped up to full bars LTE, but still, nothing loaded, no maps, no internet radio, no web browser. Got home, it reconnected to wifi and everything loaded again. We use ATT for our cell phones, and they were working perfectly the whole time. Thoughts?