Prior to getting this, I
Prior to getting this, I had two main problems with my connection. One was that my upload speeds were under 10 mbps, sometimes dropping under 2 mbps. Download speed was adequate, often around 100 mbps, but stability was a problem. Sometimes, I had to reboot the gateway several times per day, sometimes every couple of days, but it rarely stayed up more than that.
So far, I've had the antenna installed for 17d 2h 6m 38s. I'm not trying to be overly precise, but I copied and pasted that from my gateway's web page, which stands as a reminder that I haven't lost the signal.
The image is from an automated speed test that my system runs periodically. At off hours, ~754 down and ~47 up is a vast improvement. At peak times, my download is typically in the 400-600 range, and upload speeds are in the 20-30 range, which is more a statement about T-Mobile's congestion than anything else. But it also shows that congestion alone was not my problem before I got this antenna.
I'm using their window entry cable and I mounted the antenna on a short pole mount outside the window, about a meter above the gateway's indoor location. So the location hasn't changed much and it wasn't a difficult installation job.