Looks like Apple finally heard its customers. The "Enable 3G" button (from iOS 7) is still not here, but a new option is available.
In Cellular settings, you will find the 2G, 3G, and 4G option.
http://ios8release.com/enable-2g-Internet-in-ios-8.1/
In Cellular settings, you will find the 2G, 3G, and 4G option.
http://ios8release.com/enable-2g-Internet-in-ios-8.1/