Nope, Nope and Nope. A dedicated cell phone and a smartphone are roughly the same volume, and a smartphone's tradeoff with a dedicated cellphone is minute. POTS you cannot take with you at all.
As much as you change what you are talking about this discussion seems pointless. Are you talking about cameras, making calls or the size of the device? Dedicated cell phones are MUCH smaller than most smartphones. The dedicated ones I have had have always, from my first in 00 or 01 to the one I think I have in a drawer somewhere, have all been much smaller than my current Photon Q. My first one was probably closest, since it was thicker, a flip phone, and had an external antenna. My most recent one is about half the size of the Photon Q, and the Photon Q is tiny compared to most modern smartphones I see, although it is much thicker due to the keyboard. That goes away as soon as you add a case, and with some cases you start to approach to approach Pandora/Pyra size. I have one that, when in the case, is closer to the size of my Pandora than my dedicated cell phone, and that is several years old. The average top end smartphone in recent years is even larger.
From a strictly making calls view, you can't beat POTS unless the lines go down or whatever. A dedicated cell phone has days/weeks of standby time, so as long as you can get a signal, don't spend all day on calls, and charge it once in a while you can always make a call. Smartphones have tons of problems. I recall hearing of an iphone (I think) where the location of the antenna gets blocked by your hand when holding it and trying to make a call, whichsome claimed interfered with the signal. I tried to help someone with their flagship phone that would sometimes lock up for minutes or more at a time, so they couldn't make calls while it was locked up. I could mention many more examples. I completely forgot about how bad some touchscreens are, especially when it comes to dropping it. A broken touchscreen may not work at all. My dedicated cell phone has gone through things that would leave a smartphone in several pieces, yet I can still make calls with that phone, which is smaller than any smartphone I have ever held and lasts a week or two per charge.
I don't see how you can say carrying a literal brick around is easier than a wafer thin smart phone.
Or holding a brick up to your face is easier than holding up a light smart phone.
Or dialing on a nice large number pad with one hand is harder than pulling a brick out of your back pack, using two hands to open said brick, trying to hit those awkward number pads on the Pandora all the way at the top while holding it with two hands, then having to use an awkward speakerphone, or having to charge and carry a completely separate Bluetooth earpiece. Yep that sounds SO much easier than a phone.
I pull out and use my Pandora/Pyra when I will need an actual computer or want to game. I am not in the mindset to force it into a role it will do poorly, and be cumbersome and awkward while doing it.
But hey, to each their own
Again, you are now talking about a completely different thing in this post than we were previously discussing. If you want to play the size thing, we can do that. Imagine someone wants to have their Pyra with them. Imagine this person doesn't carry a purse, but does carry a small wallet, some keys, a tiny flashlight, a pocket knife, a pen, and a notebook in their backpocket. You now have someone that carries what I carry.
Now this person wants to carry their Pyra with them. This takes up a whole pocket. Unless they are wearing cargo pants, the only place they have left for a smartphone is their back pocket, or I suppose they could swap the pockets and put the smartphone up front and the Pyra in the back. Either way, they are now carrying more than just their normal stuff. Pyra alone is still smaller than Pyra and a smartphone, and if you only need the Pyra why carry a smartphone?
An additional concern would be sitting on whatever is in your back pocket, or someone stealing it. You are much better off with a case if you are shoving a smartphone in your pocket, and I doubt one of those big screen thin ones would last a day with me if not in a case before I broke the screen or snapped a chunk of it off.
I don't know why anyone would hold a Pyra up to their face. This wouldn't be how I use mine, as I would have my wired headset already connected since I will be listening to music. Since I would still need to pull a smartphone out of my pocket and poke around on the screen to make or answer a call I don't really see any difference with adding the step of opening it (which I often do with my Photon Q to turn the screen on anyway since I have to enter a password that is over a dozen letters to unlock it). Bluetooth isn't much different. With the ones I am familiar with you can just push a button to answer, but to make a call you have to pull the phone out and fiddle around with it, just like the Pyra.
Most people I have watched making a call with a smartphone use 2 hands, just as would be needed with the Pyra, one to hold and one to poke the screen. Most of the time they are using a number they have stored on the device, although this could just be the people I know. The benefit is actually with the Pyra here (assuming we get a decent interface) since you can use nubs for mouse control, or the keyboard, or the touchscreen (fingerprints on the screen suck, so you can always use a stylus too).
I prefer not to hold a cell phone/smartphone/Pyra up to my head at all (hence my preference for wired headsets), but if that is what you are into, cool. You can have faceprints to go along with the fingerprints all over your screen. Most smartphones do the phone part poorly imo, and tend to be about dead whenever I would need to make a call unless chargd a few times throughout the day, which is a bit impossible if you are outside.
But hey, to each their own.