Default US Cellular unlocked S5 and T-Mobile...advice plz

I'm looking at an unlocked US Cellular Galaxy S5 which apparently has the ability to take a SIM card. The model number of the phone given to me was SMG-900VZKV. I haven't been able to find any information on that particular model, but I did find information for the SMG-900V, which is the Verizon model. I'm assuming they're the same????

Anyway, if I take an unlocked SMG-900V (assuming they're the same as stated above), would the internal antennas associated with this phone be compatible with T-Mobile's network? I'm not exactly familiar with the technical aspects of the phone, but from what I have read it seems that some phones has certain antennas in certain frequencies that others don't have?

A little bit lost on the topic. Tried a search on the forum on the SMG-900VZKV to get information but no matches unfortunately. Thanks for the help!