1, first of all, make sure that your mobile phone supports 5G network, most of the new mobile phones in the mobile phone industry now have 5G versions, and the old mobile phones before 2019 do not support 5G network, if they do not support 5g, they cannot modify the Settings to change it from 4G to 5G.
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2. After determining the 5G mobile phone, open the [Settings] application of the mobile phone and find the network option in it. Here, take the Xiaomi mobile phone as an example, the order is to open the [dual SIM and mobile network].
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3. After that, we need to turn on the [data network] and [5G network] to adapt to the 5G network. Note that many places do not have 5G base stations, so there may be no 5G signal, and it needs to be used in places with 5G signal coverage.
5g mobile phones generally do not need to open 5g, my 5g mobile phone has been set to 5g mode when the factory, if we want to turn off 5g mode, we can enter the Settings to find 5g, turn off 5g, if you want to open 5g mode, there is no need to study it.
The 5g mobile terminal turns on the 5g switch and sets the network mode to the NSA SA mode, 5g network is preferred, and it will automatically fall back to the 4g network when there is no 5g network.