The Samsung Galaxy S21 Ultra has now been configured for use of 4G networks .
Read moreCan you turn off 5G on Samsung S21?
Step 1: Go to Settings > Connections. Step 2: Tap on Mobile Networks. Step 3: Tap on Network Mode. Step 4: Select LTE/3G/2G (Auto), LTE/CDMA, or one of the other 4G/LTE options to prevent the phone from using 5G.
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