First of all, you need to make sure your phone card is 5G capable. If your phone card doesn't come with 5G, it won't show up on your iPhone 13. The Apple 5G switch will only appear when both your phone card and iPhone are 5g capable. So it's not that your Apple 13 doesn't have a 5G option, it's. Your SIM card does not support 5G.
There is also a possibility that your 5G option is not open, open the cellular network in the Apple phone Settings, find the corresponding SIM card in it, open the option of the corresponding SIM card, find the 5G function of data and traffic in it, and open the 5G option.
It could be a network problem. It is divided into four steps, the specific steps are as follows:
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one
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Airplane mode rebooted and turned off
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First, in the mobile phone interface, pull down the top to open the control center, restart the flight mode and then close it.
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two
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Go to Set cellular network
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Then go to the phone Settings icon and tap Cellular Network options.
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three
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Enter Voice and data
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Select the Cellular Data option and click the Voice and Data option.
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four
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Select Enable 5G
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When the page is displayed, select Enable 5G