Open the Settings app on your iPhone smartphone and tap Mobile. Tap Mobile Data Options. Tap Voice & Data. Tap 4G to keep 5G turned off all of the time .
Read moreHow do I turn off 5G back to 4G?
Open the Settings app then go to Cellular > Cellular Data Options > Voice & Data and tap LTE . Your phone will then turn off its 5G connection, reverting to (sometimes) slower LTE connection.30 Eki 2021
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