This is not news to those of us who objectively assess phones. The iPhone is revolutionary in many ways, but if you need a phone you can actually work on, stay away!!

Engadget Editor, Joshua Topolsky, was recently away from the office and tried to get some work done on his iPhone 3GS, but ended up with a very frustrating experience.

His complaints include:

1. lack of multi-tasking
2. unreliability of on-screen keyboard for chatting
3. intrusive notification system for SMS, calendar events, and push IM messages

Joshua says:

Basic functionality, like calling people, email, and certainly document editing still feel inelegant and clunky due to the onscreen keyboard, and the lack of multitasking makes moving around through those typically important tasks difficult to say the least. The experience on an Android device, S60, the Pre, a BlackBerry, or even Windows Mobile just makes more sense. Let me say that again: those experiences make more sense. Now I’m not saying the execution of those experiences is better across platforms, but the philosophy of letting users multitask is more natural to us. The iPhone doesn’t even have a method for switching between recently used or favorite applications.

We don’t work like this on our computers — why does Apple think we want to work like this on our phones?

These issues are not just being discovered. They are established deal-breakers for people who work on the go (on their mobiles). They are the reasons an iPhone is a No-no for me. The iPhone is a sleek, friendly device if you are into media and do not necesarrilly need to work on your phone. The user interface is lovely. But try to work, and…

I know that ‘Dayo has been talking of buying an iPhone recently. Unless Apple delivers a multi-tasking, QWERTY keyboard version of the iPhone, something tells me that he is more likely to regret going that route. I know his work schedule! But then, I believe in miracles.

Read Joshua’s full account: Taking the iPhone 3GS off the job market.