Miserable Connection

For those with poor (T-Mobile Home Internet App term) service and often buffering, this is technical, but it MAY help out:

1.  Use the T-Mobile Home Internet App to locate the 'nearest' tower.  This will help locate the direction that the signal closest to you is coming from.  I'd recommend placing your device on that side of the house.
2. If you can locate (physically see) the tower, or know roughly where it is, attempt to put your device in a line-of-site between your house/appartment/etc. and the tower.  I.e. If there is a large metal structure between your home and the tower … try to move it to an area that isn't as blocked by obstacles
3. If you can … place it near or in front of a window, possibly at a high place in your home.
4. Once you've found an ideal location (or as good as it gets), you may wish to try 'turning ' the device.  I.e. mine works best when the tower is ~45-60 degrees clockwise from the 'face' (LED) of the Arcadyan device.  This gives 'good - very good', while 180 degrees from that gives 'poor'.

Oddly, for ideal ‘testing’ purpose, I used a 50’ extension cord outdoors, and found the ideal location - then replicated it from inside.

As  a note, I'm fairly close to the tower (~1200') but blocked by buildlngs + trees.  Best location for me is a spot with a small gap between buildings across the street.  Winter service is better w/o leaves on the trees.

If you know where the tower is (i.e. using T-Mobile placement app), use Google Earth to draw a 3D measurement to look for obstructions between your home and the tower… it does help a lot.