1. iPhone
1.1. Pros:
1.1.1. Thin, sleek design.
1.1.2. High-quality pre-installed applications, including a "desktop class" web browser, HTML capable e-mail client, and integrated Google Maps, as well as the potential for thousands of third-party applications via the AppStore.
1.1.3. Support to read, but not edit, Microsoft Word, Excel, and PowerPoint as well as Adobe PDF files.
1.2. Cons:
1.2.1. Tied to expensive multi-year contracts in many countries.
1.2.2. Battery life may be insufficient for heavy users.
1.2.3. Substantially larger capacity iPod models are available for less money per GB.
1.3. http://www.everyipod.com/iphone-faq/iphone-3g-pros-and-cons.html
1.4. Definition
1.4.1. The iPhone is a line of Internet- and multimedia-enabled smartphones designed and marketed by Apple Inc. and released in 2007. An iPhone functions as a camera phone (also including text messaging and visual voicemail), a portable media player (equivalent to a video iPod), and an Internet client (with e-mail, web browsing, and Wi-Fi connectivity).
1.4.2. http://en.wikipedia.org/wiki/Iphone
2. Smartphone
2.1. Pros:
2.1.1. Combines PDA and mobile phone functionality in a mobile phone form factor.
2.1.2. Variety of accessories, including GPS navigation software and Bluetooth headsets.
2.1.3. Plays videos and music files with Windows Media Player Mobile
2.2. Cons:
2.2.1. Variety of accessories, including GPS navigation software and Bluetooth headsets.
2.2.2. Does not have the same set of built-in applications found on the Pocket PC—most notably, Word, Excel, and PowerPoint Mobile are missing.
2.2.3. Nationwide coverage, especially for high-speed data, is really limited to areas with larger population densities. Check your carriers coverage before committing to their wireless plan.
2.3. http://www.smartphonemag.com/cms/_archives/Dec06/SPPCProsCons.aspx
2.4. Definiton
2.4.1. A smartphone is a mobile phone offering advanced capabilities, often with PC-like functionality (PC-mobile handset convergence). There is no industry standard definition of a smartphone. For some, a smartphone is a phone that runs complete operating system software providing a standardized interface and platform for application developers
2.4.2. http://en.wikipedia.org/wiki/Smartphone