The palmOne Treo 600 was a breakthrough handset when launched.
With a great screen and a vast range of third party software, it was the smartphone to beat, especially in the US.
There were of course a number of problems.
An obvious one was the battery, users couldn’t replace it; a real flaw for busy business people.
Another problem was the Palm OS did not multitask efficiently.
Unless you were a high end partner of Palm, your application would not run in the background.
Rumour has it that, come V2, the iPhone will also have this feature.
Not so clever if true.