iOS has never supported IMAP idle, that's Mac mail only. iOS has supported IMAPpush since the very first iPhone and this support has not been dropped. In fact iCloud, yahoo and many other providers use it still.
As has been mentioned 1,000 times on this thread, Google dropped support for exchange and don't support IMAPpush (ios) or IMAPidle (Mac). Google want you to use their app with proprietary protocols.
Off topic, IMAP idle is not really suited to mobile devices on cellular because it maintains a constant connection. However, it would be nice if Apple supported it on iOS when connected to wifi only. This won't fix gmail though. Raise your problem with Google or switch to a proper email provider.
As has been mentioned 1,000 times on this thread, Google dropped support for exchange and don't support IMAPpush (ios) or IMAPidle (Mac). Google want you to use their app with proprietary protocols.
Off topic, IMAP idle is not really suited to mobile devices on cellular because it maintains a constant connection. However, it would be nice if Apple supported it on iOS when connected to wifi only. This won't fix gmail though. Raise your problem with Google or switch to a proper email provider.
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