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Is it better to combine the two frequencies or separate them?

Wifi alone. line

Smart home cannot be recognized after dual-frequency integration. Under the wave of intelligence, televisions and refrigerators are intelligent and can be connected to Wifi. If the 2.4G and 5G bands have the same name, some intelligences cannot connect to the network. Some smart devices clearly indicate that they only support the 2.4G frequency band. Although the 2.4G band of wireless router still exists after dual-band integration, some intelligent devices cannot recognize the 2.4G band after dual-band integration.

After dual-band integration, the mobile phone is automatically connected to the frequency band with good signal strength, but it is often unable to connect to the 5G frequency band because the signal of the 5G frequency band is weak at the same position.