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(Optional) Manually Configuring Frequency Bands
Context
GSM/WCDMA/LTE networks of network carriers can provide multiple frequency bands for user access. When the frequency band of a GSM/WCDMA/LTE network changes after LTE cellular interfaces are connected to the GSM/WCDMA/LTE network, the LTE data card automatically adjusts the frequency band accordingly, which affects stability of LTE links.
When the frequency band of a GSM/WCDMA/LTE network that you access is fixed, you can set the frequency band of the GSM/WCDMA/LTE network that LTE cellular interfaces are connected to. This prevents frequency band changes caused by frequency interference and ensures LTE link stability.