No worries in the long run, we just like to make sure people do get accurate info. T-Mobile uses band 4 for LTE purposes, and that'll fall within the 850 and 1900 MHz bands they're refarming aka repurposing from primarily 2G/EDGE network usage towards more HSPA+ access which would also get more LTE support there as well.
And yeah, it's irritating as hell knowing it did work and now it doesn't, very frustrating. It's the only thing I haven't been able to get addressed with this LGOG so far and it flat out pisses me off.
Currently in between devices...