Go to Settings > Cellular > Cellular Data Options . If you see this screen, your device has 5G activated. If you don’t see this screen, contact your carrier to confirm that your plan supports 5G. Turn on Airplane Mode, then turn it off.
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How to turn off 5G on the iPhone 13. 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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