The answer is undramatic, which is good. I averaged 10 to 15 meg downstream, and 2 to 7 meg upstream, which is consistent with almost all LTE devices on both AT&T and Verizon ( VZ) that I have been testing recently. One year ago, when there were far fewer LTE devices -- the pre-iPad 3 and pre-iPhone 5 days -- the speeds were faster, but they remain excellent. An average ping (latency) runs around 40ms, again typical for this LTE class. One final aspect: battery life. I found it to be excellent, equalling the best portable WiFi hotspots in the market. In other words, this truck can actually tow like a truck. In the end, that is what matters the most. You get this device so you can work for most of the day without taxing your smartphone's battery. Mission accomplished.