Simplicity is the key, and typical of Apple's product range. Physically and in regards to the interface, simplicity is what drives its design, and for the most part it works well. Apple is so confident of the design that it doesn't include a manual in the box. We're not ashamed to admit we've needed Google several times to show us how to perform certain tasks.
The iPhone 3G 16GB feels as good as it looks. Its slick glossy exterior fits perfectly in your hand, and feels comfortable against your face. The 3.5-inch display is bright and clear, and never leaves you wishing it were bigger or easier to read.
The much-lauded interface is a pleasure to use with finger-friendly buttons and charmingly designed icons. Screen real estate in most applications are dedicated to what is most important, without menus or settings to distract you. Physical input is well thought out and is reasonably intuitive. Gesture controls using the multi-touch screen are great and easy to pick up. more
When you buy the iPhone 3G 16GB, you'll need an unlocked iPhone to use it on the network of your choice. Be sure to check the iPhone you buy is unlocked, and if it isn't, how much it'll cost to get it unlocked.
Once it's unlocked, you'll have the freedom to choose the network, and the plan that suits you.
No need to be locked-in to a 24 month contract. Buy a unlocked iPhone and go with a prepaid plan - It's cheaper in the long run!