t-monile home internet is barely providing basic data speeds sometimds.

This JUST happened to me starting Monday of this week…. I WAS connected to the T-Mobile tower (was Sprint) only 1 mile away and getting VERY high speeds then it disappears Monday….  They are converting Sprint towers over right now and I am currently connected to a tower over 10 miles away…. for the time being……. you need to run Speedtest (app on your phone) and AS it starts to run the download test and the meter arrow starts to move start to rotate your gateway and see if it starts to 'jump' in speed….. run it several times and do this over and over….  it has 4 antennas inside and rotation affects where it is looking outside….. also try unplugging it and while it on try moving it to different locations in your house and you need to test next to various windows each time…. there is a small display at the top of the unit and to activate it just tap on it lightly and you may have to swipe it left or right a couple of times to find the connection strength 'bars' ….they are very bright and may be a bit hard to see…..  at each location you can slowly rotate (like ¼ turn at a time) and see what you get…. once you think you have found a better spot plug it in and wait about a minute or so for it to come back on and after another 2 minutes let it finish up connecting and THEN redo your speed test(s) ….. If you happen to have an upstairs then by all means locate it up there…..  there ARE kits available online from a company called Waveform that well let you add an external high gain set of antennas to the unit and you can then pull in signals many miles away….. works very well by the way….. and there are videos on YouTube these days about that...