No LTE? topic

I apologize in advance if this has been addressed before. I'm running stock-rooted 5.0, stock kernel, and what I think(?) might be the radio for 5.0.1 I'm not sure... APN settings are correct and in the *#*#4636#*#* Phone Info menu I'm using LTE/GSM/CDMA Auto (PRL). Do I need to double check my radio or do something else? I'm on T-Mo with the TRULY Unlimited data plan. Any suggestions?