Your cell phone's onscreen keyboard is great for sending short messages, but if you want to send an e-mail or take some notes then you're going to need something bigger. A mini wireless keyboard will easily slip in your pocket. When you need it, it will link to your phone via a Bluetooth connection. Once you have a connection, you can write e-mails, work in word processing software, or type up a long Facebook status update. Many of the best mini wireless keyboards come with a built-in trackpad to make using your device even easier. Buy one, and start getting the most out of your phone.