nothing would stop me and honestly if I could find a decent and new one similar to my old Sprint/Nokia phone from like 2001 I’d use it. I can’t stand smart phones, I never liked them.

Eh, I see no reason to switch to a dumb phone, because I don’t think I’m that bad with my current phone. My main User profile on GrapheneOS is pretty minimal when it comes to apps, it’s mostly messaging, banking, navigation, workout and music (I should probably move Lemmy and Pixelfed to a different profile, but they both have pretty little potential for scrolling for too long since the new content is naturally limited).
The only game on this profile is the one I’m developing as a hobby project lol

All the annoying Apps (Secondary Email, Amazon, Aliexpress, Linkedin, Smartlife, Grocery store coupon apps etc) are banished to a secondary profile that has no permission to run in the background or send any notifications.

Dumb phone features are about 5% of what I use on a daily basis on my phone.

I think it definitely depends on the persons needs. I use my phone for maps when I am going somewhere I am unfamiliar with. I use it for pod casts and audio books all the time. I use it for checking my bank account. Could I use something else to do these? Sure, but do I have access to all of the secondary devices to accomplish all of the above, not always. So yeah, the smart phone did become the catch all for a ton of daily processes, and I don’t have to carry 10 devices anymore.

My smartphone isn’t a phone with “extra” features to me. My smartphone is a portable personal computer with extra sensors, a GPS receiver, and wireless internet, which also happens to have a phone app. I don’t want to carry an extra “dumb” phone. I would prefer my smart watch to be the communication and identity hub for me and my devices: holding the SIM card, acting as a wifi hotspot, routing calls and internet to my handheld brick or laptop, etc. Instead of acting like a third party add-on, it would be a mostly distraction free core. Let me use a smartphone, laptop, steam deck, cobbled together cyber deck, or whatever else have you as my local screen, storage cache, and/or proper desktop. Then I can put the screens down or leave them behind without feeling cut off or potentially stranded in a world that practically requires it to navigate with any ease. I want a smart watch that enables me to leave the house without car keys, driver’s license, and credit cards; essentially with nothing but my watchphone. I want to be a cyberpunk Dick Tracy. What I want, with the freedoms and open standards I want, with the privacy I want, without being locked into a single monopoly walled garden, is probably a pipe dream. I want what is probably the next evolution of the “year of the Linux desktop”. But a kid can dream.

I might switch to a flip phone if it had gps and maps.

That’s simply the killer app for smart phones, at this point it’s a necessary part of my life. Without it I need a separate device just for that, and that device is actually less useful.

Edit: now that I’m reading other responses I have to agree, secure messaging and 2fa are really important too.

I could live without everything else, but to be honest, I don’t use much else. A few games, Lemmy, music apps, audiobook apps. Of those, Lemmy is the app most likely to leave me feeling upset, or like I want to doomscroll.

I think limiting the apps I use is the biggest thing I can do to not make the phone a negative influence for me. But to be clear, if that starts happening, Lemmy is the first to go, I already don’t use any other social media.

The one reason I have a nice, relatively new phone is that I want a fairly large, OLED screen for reading after dark. Yeah, I use it for a bunch of other stuff, but I wouldn’t really miss any of those. The only thing I really need is the ability to make it look like text is floating in the dark over my head in bed.

I used a flip/dumbphone for most of my teenage and high school years.

It’s like asking what would make me go back to having a DOS computer and playing Wolf3D after being in full body virtual reality with Half Life Alyx.

I don’t use a smartphone enough to worry about it. If I am using my phone, most of the time it’s either Anki, Google Maps, or, like you mention, banking/government stuff.

Texting via SMS (or whatever it is these days) isn’t really a thing in Japan, either, which makes things more difficult especially as I despise talking on the phone. If, for example, I’m at the supermarket and wife remembers something she needs, getting that message is good

I have exactly one game and exactly one 2fa app that I would meaningfully miss out on switching to a dumb pbone, outside of those two things I would genuinely consider it.

I am actively avoiding calls and noone writes to me. If I were to give up a smartphone flip phone would be nearly useless to me

well, I work in IT. So I am required to use apps like Teams for mobile and DUO 2FA in order to authenticate my laptop sessions.

Now, could I use only SMS/email 2FA? Technically yes. And I could just have Teams on my work laptop and have that nearby all the time, but it would be extremely inconvenient. Navigation would also be a big problem. Due to the nature of my job, I frequently have to visit a large number of different sites around my area. Having to open my laptop each time I need to go somewhere, open up a map site like OSM or Google maps to get the directions, print them off or write them down, then follow them manually hoping that I don’t encounter random slowdowns or closures in an area I am not familiar with is basically a non-starter for me.

As for personal use, navigation rears its ugly head again. I often will be traveling with friends or family and we decide on a whim to change our destination for dinner or hangouts after based on times, appetites, budgets, closures, etc. Having a map app on my phone makes that easy to do. It would be impossible to do that without it, unless I had a near exhaustive knowledge of my whole city and surrounding suburbs.

Honestly navigation is the #1 thing. Random other stuff comes up, like my mobile password manager Bitwarden, or my various apps like my City’s bus/metro app, and my city’s parking app. Both of which again, I could make do without, but it would be extremely tough and inconvenient.

I’ve decided that the happy medium for me is to use as much FOSS phone tech as possible. That way at least the tracking and data harvesting is minimized and I am generally not supporting megacorps.

I use GrapheneOS, with mostly FOSS apps. The proprietary apps I do use are isolated with GOS’s special sauce. I use Magic Earth for my navigation, which while not open source, the data sets they use are, and they are not google, and based in the EU, so far better privacy than Google’s trash.

I wish I could switch to a flip phone, I’ve seriously considered it many times over the last several years. But for my lifestyle, it’s just not feasible. The best balance for me is to compute ethically on my mobile. I have thought about going for the weekend with just a dumb phone, that might be possible, but I’ll have to see.

Dumbphones are ridiculously insecure, and they only support SMS communications which don’t have any end-to-end encryption.

Maybe not a dumb phone but I would love to use a phone with an e-ink screen. I know there are some projects about this or some Chinese phones but I haven’t met an e-ink phone that I can install a custom ROM yet.