After the mobile phone is installed with a 2G/3G card, 4G signals flash repeatedly and the network will be disconnected. - ZTE

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After the mobile phone is installed with a 2G/3G card, 4G signals flash repeatedly and the network will be disconnected.

In the area with 4G signal coverage, 4G signals flash repeatedly and the network is disconnected because the SIM card has not provisioned 4G services. If a mobile phone supports the 4G function but the card does not provide the 4G service, the network will instruct the mobile phone to switch to the 4G network, but the network will reject the 4G service.
If you have not subscribed to the 4G service, it is recommended that you disable the 4G network.

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