Acer DX900 Windows Mobile Smartphone Comments

Shrink this down to the size of an S740, give it a keyboard, and put in a bigger battery, and I'm buying!

It's got two SIMs in it and you're complaining that it's too large.
Why not demand that it has a full-sized SD card slot and complain that it isn't the size of a bleedin' pee?

Because my comments were genuine.
The s740 is about the biggest sized phone that will fit comfortably in your pocket.
A device like this really does need a keybaord to make it fully functional.
Less than a day's use on a battery means lugging a power adapter around, which defeats the point in having a multifunction device!

So keep your pointless comments to yourself, and let those post with sensible suggestions!

*sigh*
The comment was made to you _and_ to the reviewer (and to the many others who would agree with the size sentiment), so don't take it so personally.
Nevertheless, my comment stands on its merits.
Everything you've requested has an impact on the size of the device.
People seem to forget how large SIM cards are compared to the overall product, and you have to be able to remove them at will. Keyboards need to be a certain size to be ergonomic. Batteries with high enough energy densities consume a well-defined volume and weight. Loudspeakers need cavities otherwise they don't tend to be very loud.
This isn't just phones, but also laptops, flat TVs, cars, you name it.

No doubt it should run at 1GHz but not get hot, have a decent camera without a huge lens and run a hugely capable - multi-tasking - OS without crashing ever and with absolutely no security holes and no need for updates with no impact on battery life no matter how many applications are running.

I've little doubt the comments are genuine in that they were honest and sincere, but my comments are genuine in that they are based in fact.