A blueprint for the perfect phone

Battery life
Battery life is everything -- without power, all you have is an expensive paperweight. So the DUB incorporates an electrophoretic and OLED screen, and a light sensor that dims the backlights depending on ambient light, which all contribute to saving energy.

On their own, those features aren't enough, and as anyone who regularly listens to music, browses the Web or takes photos on their phone will tell you, the battery gets drained very quickly. This is where a dual-battery system comes into play.

Rather than use the same battery for the MP3 player, camera and phone, the music player and camera run off a secondary battery. This battery is far smaller than the phone's battery, but when you look at the size of the Sony NW-E013 Walkman, which has a 30-hour battery life, then you see you can get plenty juice from a tiny cell.

Both batteries are charged via the same charger and at the same time. You can see how much power is left in each battery via the electrophoretic screen's twin power meters.

Finally, the DUB's battery life warning system is customisable, so you decide when you should recharge your battery and not the phone. If, for example, you think that 30 per cent left is too low, then you can set the phone to warn you at that point.

The DUB is my perfect phone. It's thin, it's packed with the features I think most people need and it looks gorgeous. You never know, maybe one day a manufacturer will produce something close.

If you have a drawing and spec for what you think is the perfect phone then we'd love to see them -- send them to crave@cnet.co.uk, or talk up your own personal uberphone in comments below.

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