For users uncomfortable with the iPhone's on-screen keyboard, Apple's Wireless Keyboard could be a more convenient option. The keyboard connects wirelessly to the smartphone so users can type faster and quicker. The keyboard is geared more toward larger-screen devices like the iPad, but it can be used with the iPhone 4. The keyboard is on Apple's Web site for $69.99.

A cheaper alternative could be Menotek's Flexible Bluetooth Waterproof Mini Keyboard, priced at $29.99 and available on . The device is compatible with iOS 4, the operating system used in the iPhone 4.

The iPhone 4 comes with the ability to video chat with friends through Wi-Fi, so it could be time to purchase a wireless router to enable the feature. Companies like D-Link, Linksys and Netgear sell routers that provide stable connections and long ranges. But you could strike luck with inexpensive routers from companies like Trendnet. Google Shipping Trendnet Wireless N routers starting at $30.