T-Mobile has no coverage with only one tower in my town. So Verizon and AT&T are it. I switched today to Verizon, impressed with signal strength so far, but not impressed with the download speeds I am getting on phones and mifi. 5 meg down is the most I have seen, with 1-2 up. It's been as bad as 1 down and .3 up. Already called tech support and they need me to use it more till tomorrow so they can get some logs.