With the phone itself I miss a headphone jack (using an adapter USB c to 3.5"), no hardware keyboard, and no replaceable battery.

In general I don't turn my phone off often enough, usually only once or twice a week I should turn it off more often.

Generally: That I can't mount my network samba shares into local folders without rooting the whole damn thing.

That I can't force my device to stay in wifi if no internet connection is available (to access local network only).

Device specific: That sometimes volume control is very buggy while putting in a headphone jack and I have to navigate into sub-sub settings hell to set everything back.

About 2.5 years ago I left behind Android and went to the Dark Side. Bought an iPhone. It was frustrating to use at first because changing OS is a pain in the ass, but I got used to it and actually really like it now.

But I still have two big complaints:

There ought to be some kind of icon in the toolbar to show me I have unread notifications. I miss this very much from Android, which would show icons for the apps that have notifications. The Apple Watch solves this by having a notification icon, but I shouldn’t need to buy a separate device for that functionality.

I cannot stand that I can only go back by swiping from the left side of the screen. On Android the swipe in gesture from either left or right side could be set up to be the “back” action. I understand why this is, Android developed with a dedicated back button and thus has an OS-level back command, whereas iOS is highly contextual and you flow through apps and menus differently than Android, and it has no dedicated universal “back,” so swiping in from the left is back and swiping in from the right is forward. It makes using a large screen one-handed unnecessarily difficult.

It feels like the os I have wasn't designed for my phone. Buttons aren't scaled properly, system apps ask me for consent over "privacy concerns", no easy control over simple features like wallpaper, sluggish/buggy animations. I have a Redmi

OH, least favorite.

I was wondering why everyone is so sarcastic.

Well, buggy software (MIUI) and the surveillance. I mean, there's a higher chance MIUI bricks itself during an update than with any Alpha-release custom ROM (so I don't update... [But it's also due to Android often removing features from API and breaking niche apps]).
E.g.: Wallpaper bug (stretched or awfully upscaled after changing brightness), brightness slider not working, broken screen rotation, battery drain, swapped L/R microphone audio channels, FM radio cutting out, system crashes and waves of killed apps, camera app in landscape has some buttons off-screen, MIUI screenshot tool occasionally breaks and stock screenshot tool is used (with full-blast audio sound effect no matter current volume settings), notification access service needs to be manually reset for each app after the app is restarted, 120Hz gets laggy after toggling battery saver on and off and needs to be manually reset, dark mode is forced on all apps but the setting to change this sorts all apps in random order,... Also, the Poco X3 Pro motherboard has a tendency to die. I am on this phone's third motherboard currently.

Also... the volume buttons can get stuck. Xiaomi phones have issues with dust particles making their way into buttons and activating them randomly.

It's awkwardly tall.

Making me feel like a freak for asking for the freaking sudo.

If you can't do any software change you want, you are not the owner of the device.

Difficult to type on the outer screen because the keyboard is too squished horizontally (Galaxy Z fold 4)

That it isn't a librem 5 or one of those tinfoil hat phones

Proprietary hardware

It's not compatible with LinaegeOS or any FOSS operating system, i checked.

A while back i would have complained that the fingerprint scanner was crap, but i actually got that working properly by entering the same fingerprint three times

I dislike most of it, everything but paying contactless, making calls or SMS. I have a 2020 SE because it is small but I want a tiny dumb phone, being able to store my bank card on it to pay anywhere, and phone or SMS someone. The rest to me is useless, I very dislike it when I am somewhere and everyone is on their phone (mostly with the volume on 10 too), I don't even bring mine when I visit someone just to make a point how disrespectful it is when I am invited to your home and whipping out a smartphone.

I have a Pixel 6a with GrapheneOS. I would in change a thing. Best combo I've ever had.

How difficult it is to remove Google's bloatware.

No headphone jack, and having to deal with Samsung's bullshit. This will be my last phone from them.

Battery life is a little short, and the software support ends in about a year. Really wish I could keep this phone going for another 3 or 4.

Still looking for a keyboard that only suggests actual words