Hello полина187
To enable 2G networking you have to follow these steps:
Settings -> Mobile Data -> Mobile Data Options -> Voice -> Check 2G
I hope I was able to help you.
Have a nice day
Marcel
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When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.
Hello полина187
To enable 2G networking you have to follow these steps:
Settings -> Mobile Data -> Mobile Data Options -> Voice -> Check 2G
I hope I was able to help you.
Have a nice day
Marcel
2G disable option has been pushed from Apple during iOS 11.3 update for iPhone 6 and above Without prior notificactions.
2g toggle option is available for iPhone 5S Users.
Apple should consider to enable this 2G option during their next update for all iPhone users.
I personally prefer using 2G signals when I am at home and work (Use personal Wifi for internet) this will enhance the iPhone battery life and iPhone performance
how can I turn off 3g and turn on 2g in ios 11.3?