I currently have an iPhone X and recently switched from Verizon to T-Mobile. Since switching, I have noticed terrible indoor coverage and generally worse coverage in fringe areas. I have read that the iPhone Xs and Xr have support for LTE band 71 (600 MHz spectrum) and that supposedly helps with indoor coverage and fringe areas. I am wondering if there is anyone with T-Mobile who has upgraded to an iPhone Xs or Xr that has noticed a big change when it comes to coverage. I am trying to decide whether I should go back to Verizon or wait until the fall and upgrade my phone to whatever comes out (which will presumably support that 600 MHz spectrum).