How to verify proper Radio loaded?

I am not sure I have the proper Radio flashed? How dp I verify what I have and what should I have?
How do I display tower ID and information.
T-mobile tells me that I should be connected to new tower band 12?
I have S6 SM-G920T with 5.1.1 rooted by XDA no-Konx method.
Bootloader: FA50_G920TUVU2AOE4
PDA & Baseband: G920TUVU2DOH6
CSC: G920TTMB2DOH6
Latest firmware: G920tuvu3doi1
Kernel: 3.10.61 , aou@lennear.com #1