Is there an option to turn off 5G?

In your mobile device’s settings, look for the option to disable 5G.

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How to turn off 5G on a Samsung phone

Yes, you can turn off 5G on your Samsung Galaxy S21 . The process follows the same steps, and you will force that phone onto 4G networks. Any Samsung phone running OneUI version 3.1 or better will follow these same steps. In fact, the process will be similar on most Android phones.