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(Optional) Selecting Frequency Bands
Context
A GSM/WCDMA network usually provides multiple frequency bands for users to access the network. If a GSM/WCDMA network changes its frequency band, the 3G cellular interface connected to the GSM/WCDMA network will adjust its frequency band automatically to adapt to the GSM/WCDMA network, affecting the stability of 3G links.
If the GSM/WCDMA network in use has a stable frequency band, you can manually set the frequency band for the 3G cellular interface to connect to the GSM/WCDMA network. This prevents network frequency band flapping caused by frequency interference, and ensures the stability of 3G links.