MIMO antenna for T-Mobile 5G home internet gateway?

Some have seen improvements, and some have not.. I think it depends on how close you are to the towers, the direction you point the antennas, quality of the antennas and how high you mount them if the tower is at a higher altitude then you. It's more of a try it and see, but remember if you break anything during this it could cost you $370 to replace that gateway according to my contract with T-Mobile Home Internet.
And those U.FL Male connectors on the built in antennas can be fragile so be careful when removing the ones connected, and connecting the pigtail ones.
Also, be sure to remove the sim card after powering down the until or it can drop inside the can and might be hard to get it out.