I had been using AT&T 3G for the past year, and recently decided to switch to tmobile. I believe this is the specs for our Mi-One S: This is what tmobile used to offer: Obviously we are UN-Able to run 3g/4g on t-mobile network. However, since last month, i believe tmobile added the 1900 mhz spectrum to their 3G/4G services: What settings do i do to get onto the 4g network? i was wondering how i can force it to just use the 1900 mhz band, or force it to go into 4G instead of 3G when it's on the 1900 band. i've tried going to : Settings > Mobile Network > Network Type Selection but that option only gives me "3G preferred", "2G only", or "3G only"