TMobile Home internet

This is a new technology so it has a new challenge. I got my device week before and I was getting just 25-30mbps. I started digging into it and found that it is connecting B2 on primary but n71 on secondary. I used cellmapper.net and found that I am actually on intersection of two towers, one with n71 and second with n41 and noticed that it is switching two towers time by time and when it is connected to n41 , then I get 120 - 130 mbps download speed which is really good.

I tried to position gateway. At the same spot , if I place , then I get only n71 only but if I rotate 180 degree at the same spot, then I get n71 and n41 and it stays on n41 but once a while it switch back to n71 and then I have to reboot the device (without changing position) to switch back to n41. I wish it stays on n41 forever. 

so looks like if you are on n41, then will get good speed. n71 will give low speed but still within t-mobile promise of average speed.

Also advice to new users that right after first startup , you may get very low speed (like I had 14mbps) and that is because after first startup, it takes ~2 hours (as per tech support) to fully provision to get higher speed.