I live in chicago and i have tmobile ..i read on how the x7500 and x7510 have different bands that dont work on tmobiles 3g band but here its working ..well in one spot i seen my x7510 work even video calling it may be a fluke but on jackson blue line stop under ground next to the stairs leading up to street i can see the triangle and i even tried video calling and it works odd very odd only this spot does it work
