It's almost as if there aren't already products on the market that can make phone calls, play music and video, access the Internet for e-mail and the Web, taking pictures, etc. I'm not saying any of these smartphones are perfect, be they built on the Palm OS, Windows Mobile, Symbian or some flavor of Linux, but you wouldn't think they exist from the attention and coverage the iPhone is receiving.

Sure, there is much that Apple has done right to warrant this attention, not the least of which was allowing demand to build up for years before Steve Jobs stepped out on stage at MacWorld in January to introduce the iPhone for the first time.

Unless you've been living under rock for the last six months, you're likely aware of much of what the iPhone can do. And, from early reviews, it seems Apple has gotten much of that right; particularly with what is said to be a fantastic display and compelling and intuitive user interface. (The fact that they've implemented cover flow technology into the iPhone is enough to make it a compelling iPod alternative in my book.)

However, there are some features available in many of today's smartphones (and even some cell phones) that the iPhone does not have. While many of these may be able to be added or improved upon with software updates later, others clearly cannot until future generations of the iPhone.

Below is a list of missing features: