I'm not sure what classifies something as a "metro area", but whatever it is, T-Mobile US says their LTE 4G network now covers 233 of them. No matter how you parse it, that's a big improvement over where they were last year, fighting Sprint for last place in next gen. Neville Ray, chief technology officer for T-Mobile:
"We've not only delivered nationwide 4G LTE months ahead of schedule. Our nationwide 4G LTE is right on top of our already nationwide 4G HSPA+ network - which translates to one wicked-fast combined 4G network experience."
If you're using T-Mobile LTE in your "metro area", let us know how it works for you.