How to turn off 5G on the Samsung Galaxy S21 - Android

Qualcomm and other cellular modem makers have gotten so good in stuffing tens of 5G bands and filtering them without interference in a single chip, that more and more phone makers are offering handsets that can work with any 5G network out of the box, starting with the . Due to the integrated 5G modem, the unlocked  also supports all US carrier bands out of the box, and ditto for the .