I havent seen that, I have been running it for days and have only had one issue. The person I was talking too suddenly couldnt hear me, could have been a bad connection or something because like I said it only happened once.
I don't know anything about the data dropping off issue that others are having, I am in a solid 4G area and have never had the issue.
I will say that the 4 G is better with this modem. There is a bar that I frequent that I can only ever get 3G in until the new modem, now it is 4G all the time.