Why Does My APP Show a Good Signal, but My 4G Cannot Be Used?
Why 4G cannot be used even when the APP shows a good signal
A good signal does not mean that the local base station network is strong. If the current 4G network is not good, we can manually switch the SIM operator for you according to the NID you provided. Our official SIM card supports ATT/T-Mobile/Verizon, and can be debugged to the operator with the best network in your area.
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