I recently got my first iPhone, and I just couldn't get past how annoying some things were. But now, after about 1 year I don't feel like that at all anymore, perhaps I'll feel them now when I go back... This is what I wrote down at the time:
* Tried installing Signal 4 times, it failed on the apple account generation and no further clues that it didn't or did install signal (it didn't).
* You can't just put icons on the bottom of screen, where your thumb is... need to fill the top with other icons first to get important stuff on the bottom. (The start screen fills from the top, so to say, very annoying).
* Love the privacy notice that say they won't share anything that is not needed for functioning, feels good.
* App store does not start with search.. so I feel a bit lost at first.
* Confirm app installs with side button twice, bit weird. Especially when you have the phone in your left hand.
* Absolutely maddening that it keeps correcting my .nl email adres to .nul (android leaves non text field alone as far as I'm aware).
* Nextcloud picture not available to Signal? I Synced some folder of nice pics for profile pics. Where are they?
* No intro at all into UI... After a week or so, I got a sort of set if intro cards which were quite helpful.
* Almost all of my selfhosted apps are represented, very nice (NextCloud, Home Assistant, WireGuard)
* Top suggestion in app store is never what you are looking for or searched for. Pretty strange. Can we change that? Ah I learned later that the first one is an ad, you can see it because there dark blue around it (???)..
* Many controls are at the top when I can't reach them. In Android I feel that that is much more avoided.
* Video pauses when taking a quick look at notification tray, I don't like that.
* Notification tray is on the left side, the settings on the right. But not on the lock screen, then it's a swipe up... (I got used to this after some time)
* Can't drag to folder onto lower bar/icon area (maybe fixed in iOS 15)
* Pull down in middle of screen brings up Siri, not notifications, I'd swap that, now notifications really require a stretch of your hand, or that awkward small swipe down at the bottom. I turned Siri of when she started interrupting my meetings.
* I set Firefox as the standard browser yet both telegram and Signal (so far) always open Safari.
* Photos contains every image, not just photos, it's more like a gallery.
* Why is it not grouping notifications? Notifications were quite confusing at first, but I got used to it. Especially the difference in notifications and bars (stroken in dutch).
* Auto correct does not uncorrect on backspace. Language switching does seem to go very well. It ofter autocorrects my last work AFTER I press send. Absolutely maddening.
* Swipe to type only seems available for English (fixed in iOS 15)
* Notification dots sometimes stuck on Nextcloud or other apps, I turned them off on some apps.
* Swiping in photos app is un-intuitive... but once used to it it works well and is consistent, ie it also work in chat apps like signal, close picture, swipe down. Details, swipe up.
* Printing worked without an app, but unable to change size or anything. Everything is printed at 25%? Samsung/HP print apps are absolute crap.
* Red dots are not synced with open notifications, when I dismiss a notification I want the red dot gone. hotspot keeps shutting down after some time, annoying.
* I had 652 mb is data on iCloud no idea what it was, I didn't think about it and now stuffis in the cloud.
* In the android notification tray curation can happen, on iOS it feels like a mess (not anymore after a year)
* Alarm is confusing, not the same sound for the health alarm as the other and weird to change an alarm. Also weird to turn the alarm off
* Replying to an email and adding a couple of consecutive pictures is a very difficult.
* Widgets feel connected, updating the calendar and closing it makes it swoop back into the widget and the widget has the changes I made. On android I was used to it being normal that widget would still need some time to update, later on, to represent my changes.
* One gets a report screen use report about next week, tap it, it takes you to the current week :s