iOS 7 Beta: T-Mobile Cellular Data not working!

I installed iOS 7 yesterday, and since then, my phone only works on Wi-Fi! As soon as I turn it off, the phone shows "T-Mobile LTE" in the corner like normal, but no data is working! Do I need to fool with the settings?

 

For the Carrier it shows TMobile 14.5

 

Thanks! It's working now, on both 4G and LTE. I got it from tpb. It's pretty interesting so far.. I think I'll keep it as long as there are no major bugs until the real one comes out.