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.
Read moreCan I switch from 5G to 4G?
You should see both 5G and 4G LTE as options you can switch between (you might even find 3G and 2G are there, too). On a Samsung Galaxy phone, from Settings go to Connections, Mobile networks, and then Network mode.4 May 2021
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