What will cellphones and other mobile devices look like in five years time? I’ve been pondering this question for a while now, and this post has gone through numerous iterations.

It would be very hard to determine what mobile gadgets will be like over a longer period, but given the current rate progress (and market adoption), the following points of speculation might be valid in five year’s time:

• The rise of head-mounted displays like Google Glass means that mobile devices won’t need to have large screens (or possibly any screens), which means they will no longer be forced into the flat, rectangular packaging of today’s pads and cellphones. A screenless gizmo that connects wirelessly to your glasses could look like anything – a belt buckle, an old-school Walkman, or something completely new.
• Battery life will no longer be a major concern. Between improvements in batteries that are close to market availability, Apple’s patenting of tiny fuel cells for phones (not sure I’d want hydrogen in my pocket, but anyhow), and several competing wireless energy technologies, I suspect that how your devices are powered will change rapidly in the next few years. This is a good thing. Batteries haven’t changed much in a hundred years, and they’re one of the least reliable technologies in use.
• We’re likely to see more experimentation with input devices. I don’t think keyboards and mice are going “away” just yet, but better verbal input, gesture recognition and other experiments are likely to be available in the market.
• The performance gap between laptops and their smaller cousins will close. New chip technology seems to be focused heavily on power consumption, so it is likely that the types of chips used in mobile gadgets will be similar (or possibly identical) to those used in laptops. One implication may be that fully-fledged operating systems will win out over less powerful, specifically mobile ones. That could mean, for example, that iOS and OSX will converge, and that Microsoft may actually be crazy like a fox. In the longer term, there are still many companies that would prefer to push processing power into “the cloud”, and have mobile devices primarily act as dumb terminals, but I think the short term will see things largely going the other way.
• We may see some new form factors – if most of what you need can be built into a pair of glasses, and only some people need things like more storage, or faster co-processors, there may be a market for small add-on devices that communicate via Bluetooth with a primary device, and that contain things like SSD hard drives, or high-powered GPUs.
• We may see a further move away from cellular technology to “WiFi plus Voip”. I already use Skype and Google Voice more frequently than I use my cellphone’s phone number. If free (or merely very cheap) WiFi becomes ubiquitous, why pay for cellular service? If the ENUM system takes off (it is still largely experimental), you’ll pay a few bucks per year for your phone number (similar to domain registration), and forward it however you want, to whatever devices you wish. I suspect this will further erode the customer base of cellular service providers (to the benefit of companies like Apple).

What does this all mean?

• It would take a lot for me to be able to do serious work from a mobile device. A full-sized keyboard and mouse are rather useful when writing code, or typing up a lengthy document. If my cellphone had a docking station, that might change, but I suspect that (for certain kinds of users) laptops aren’t going away any time soon.
• The companies that will win in this space are going to be the ones that bring the full power of a laptop to this smaller form factor. The ability to do – for example – professional graphic design requires several things: a really good screen, dextrous interface device(s), lots of processor power, lots of storage space, great software, and sufficient battery life to not be tied to a wall socket (although Starbucks is usually helpful in this regard). You can almost do that now on an iPad, and I could imagine a designer in a few year’s time standing in the middle of a park, wearing a pair of Google Glasses and an input glove, and generally looking like they were conducting an orchestra.
• Increased competition between companies in the mobile space means that there’s likely to be a lot of experimentation over the next few years, in order to try to find niches that are profitable. Expect the rate of change to accelerate, and lots of oddball products that ultimately wind up being dead ends. This looks similar to the early days of the “luggable” computer to me.
• Expect some amazing new collaborative software for these new, powerful mobile devices. The future is not big transparent multi-touch screens like in Minority Report; instead it will be 3D collaborative spaces that are viewed via, and interacted with by multiple people wearing glasses.