[AnotherGoodName]

The Motorola DynaTAC mobile phone was about the same size as a VR headset is today.

Imagine the same improvements are made to VR that were made to phones. The VR headsets are expensive bricks right now but they'll be in glasses form factor (or better) with extraordinary usability in the relatively near future. An overlay on the real world that brings remote and nearby contacts into the same room seamlessly.

[usrbinbash]

What if I don't want an overlay but actual VR? Goodbye prism-projection, hello splitlense-screen and all the form restrictions to the device that brings with it.

Besides, the hardware doesn't get much smaller than it is. The chips are not the problem, the problem is the power supply.

We have already reached a limit for phones, and that only because advertising somehow managed to convince people that it's okay for one of their most important personal electronic devices to go flat in less than a day (quick reminder that mobile phones used to last 4-5 without recharging ;-) )

So, what do we do? Put super small Li-Ion batteries into our "metaverse" devices? Not much of an immersive experience if the thing goes down after 20 minutes. So, big heavy battery it is then, and that's that about slim, cool, SciFi VR glasses.

And what about input? Displaying information is not enough, the whole thing is supposed to be interactive. Voice control only gets you so far, and is unsuitable for most interesting things we want to do (virtual keyboards, games, movement, etc.), not to mention it's not even possible in most scenarios without being permanently online to contact the ASR service (oh, did I mention that the WiFi and LTE/5G modules also gobble up power like noones business?).

So it's not just the headset, I also need an input device, or rather 2.

[giantrobot]

> The Motorola DynaTAC mobile phone was about the same size as a VR headset is today.

> Imagine the same improvements are made to VR that were made to phones.

Your missing some important details here. The DynaTAC was the whole telephone. All the electronics and battery were in the unit. The better VR headsets need a giant PC attached to them. Even with the giant PC on mains power and brick of a headset top of the line VR experiences are pretty lackluster.

What you're talking about isn't going from the DynaTAC to the iPhone. You're talking about a giant PC on mains power with a brick of a VR headset and shrinking it to just a headset (or glasses) powered by a battery. Even if you set your VR baseline to the fully detached headsets they're not at a fully usable by normal people state.

While it's not impossible to go from the giant PC on mains power, it's unlikely to be happening in the near term. The DynaTAC was battery powered so it was a continuum of development from it to an iPhone. The DynaTAC was a user device for an existing and well developed telephone system (infrastructure and services). VR still doesn't even have that everyday use case let alone the technology to make it really workable.

This is all the more challenging because today's technology is pushing up against hard physical limits. Today's GPUs on mains power with at the cutting edge of semiconductor manufacturing are hard pressed to render 4K resolution at consistently high framerates. Mobile GPUs aren't even close. So there's still a lot of question marks between today and "realistically usable VR" and a whole lot more between that an VR sunglasses.