Intelliscreen allows you to customize your Lock Screen with tons of possible displays (like your upcoming appointments, last received emails, weather info, received SMS messages, Newsfeeds and so on), but it is only available for jailbroken devices. If you decide to jailbreak yours, you can add a number of other useful applications to your iPhone:
- QuickGold - fastest app launcher: pressing the "Home" button while you are at the Home screen will present you with a search field that finds applications, contacts, SMS messages
- Cycorder - Record Video with your iPhone
- SwirlyMMS - Send and Receive MMS
- Winterboard - Customize the look of your iPhone, tons of themes available
- Categories - Sort rarely used app icons into folders, cleans up your home screens dramatically (and you do not even need to launch the apps from within the folders, you can use QuickGold)
- BossPrefs - provides a one-stop screen that allows you to easily enable and disable things like 3G, Edge, Wifi, Bluetooth - without having to dig your way through the regular "Settings" app and its nested sub menu maze
Jailbreaking is a snap using QuickPwn, which is already available for the latest firmware 2.2 ...
Cheers,
Heiko