I popped the old SIM out and popped it in the phone. Once it "activated" it said Verizon LTE. Of course, I was using wifi, too. Once I was out of range for wifi (I had to run back to the Apple Store cuz I ordered i7 cases instead of i7+ and didn't realize until I went to put it on) that I had no data. So I stopped at VZW and they fixed it.