I'd pay double to have the iPhone 3GS curved back that actually felt comfortable to hold.

I got my 4 out the other day because I was having the $29 battery replacement done in my SE. The 4 feels a little heavy, but the size is juuuust right. I would gladly pay the same. Hopefully with a headphone jack.

Purely anecdotal, but how are you comfortable with the real estate the screen offers? I understand it feels amazing in your hand, but it wasn't until I actually picked up a working iPhone 4 that I realized I could read maybe only two message responses from a person I would be having a conversation with.

I'd imagine if they reduced the bezels on the size of the 6 product line, you'd really find the best of both worlds. Both small in the hand, but also enough space to get more screen real estate out of your applications.

For that kind of reading my iPad is right here in my bag. For quickly sending messages, playing music or arguing with Siri, the iPhone 4 or 5 were much easier to hold or pocket.

The best phone you can fit in an iPhone 4-sized package isn’t signicantly better than an iPhone 4.

Apart from a better screen, faster processor, T2 and A-series chips with far better graphics performance, Touch ID, inductive charging … what have the Romans ever done for us?

You sure you can fit all that in an iPhone 4 case? And if so, in 2019, can you make a significantly better phone in an iPhone 6 case than an iPhone 6?

The iPhone 4 is significantly thicker than the later models, somthere’s plenty of space for a battery. The backlight of the screen is a large power consumer too so smaller screen means less energy used for backlight, more energy available for power hungry extras.

Where do you put the battery for all that? The higher resolution screens and faster CPUs all are power hungry as hell.

The iPhone 4 has less real estate, so far fewer pixels, so less graphics processing required. Also less energy required for the same brightness. Also the case doesn’t have to be proportionally thicker, so the extra thickness is entirely for battery.

I’d be surprised if an iPhone 4 based on new power-sipping technology wasn’t within a few percent of the web browsing/movie watching time of the iPhone 8 or similar.

There obviously are trade offs, but personally I would forego nicer screens, cameras, CPUs, and slimness to have a smaller phone. Obviously, Apple is betting that this isn't a sufficiently profitable market, but one can dream.

An iPhone XS phone doesn't even fit into most women's pockets. It'll be funny if pockets get bigger to accommodate phones.