After switching from a Motorola Moto G to an Apple iPhone 7 A1660 using the BYOD SIM card, there is service but it is extremely slow. I had only 3G speeds on the Moto G. I thought by using the BYOD SIM card I could get 4G LTE speeds on the new phone. I just checked and I am only seeing about 4.9 Gbps down. Thanks in advance.