I'm on the 3GB LTE Basic data plan but I have noticed that only traffic made on the LTE network is being counted toward my 3GB allotment. My iPhone cellular usage shows 350MB thus far but my AT&T data usage only shows 150MB. There have been plenty of times where signal was spotty and I was on "4G" only and not LTE. Could it be that data over the "4G" network remains unlimited while only LTE is capped at 3GB? The way I see it only traffic on the LTE network is being counted. What do you think?