My new Moto G Power unlocked phone will not connect to Verizon 4G but will connect to Verizon 3G. The Verizon company store said the phone was defective after two hours of 3 new sims, reseting network, and erasing all data (factory reset). Since I bought the phone from Motorola, they sent me a another phone that also did not connect to Verizon 4G. Motorola is sending me third phone. What is going on?