My main complaint about iOS is text entry. Both the keyboard and voice input are incredibly bad compared to Android, even compared to Android of 3 years ago. I still struggle to type accurately or voicetype without having to make a ton of corrections. And there are better 3rd party keyboards (including GBoard) but they tend to be slow and awkward due to iOS limitations, plus then you lose voice typing completely which is not acceptable to me. If I could have an iPhone with the native Android keyboard and voice typing I'd be super happy.