iOS 6 update is a major update, and doing so from your device directly might lead to losing your data, even though the chances are likely. As such, it is adviced that you do a proper backup of your device before proceeding. Connect your device to the iTunes and sync all your contents with the iTunes, if you have not done so recently. For your information, I have just updated my iPhone right from the device itself, without connecting to iTunes.
How to Get the iOS 6 Updates and Install
iOS 6 can be downloaded right from your iPhone, iPad or iPod Touch. This is one of the major releases of iOS, adding more than 200 cool new features like Apple's own maps, Flyover - photo-realistic, interactive 3D views of major metro areas, Local search results using Yelp, Siri to launch applications, finding routes, etc., Facebook integration, Post to Facebook or Twitter right from Notifcation center, Passbook and many other features. For other cool new features, check out this.
Before you proceed to download and install iOS 6, ensure your device is connected to a power. If you don't have minimum amount of power on your device, Apple will not let you update your device. To update, your device needs to download about 626 MB size file to the device. Hence, I would suggest you to update when you are connected to a WiFi connection.
Requirements: iOS 6 can be used on the following devices: iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod Touch (4th and 5th generation), iPad 2 and The newiPad.
To download iOS 6 right from your device:
Tap on Settings >> General >> Software Update
Tap on Download & Install button
Wait until the download is complete. Once the download is completed, click on Install. The device will automatically reboot after installation.
Do you find this information useful? Why don't you tell your friends by sharing it on Facebook, Google+ or Twitter. You can also follow me on Twitter @sarayoo.info or Google+ or Like me on my Facebook for more updates, technology tips and tricks, iPhone, iPad, other iOS devices tips, iOS App Deals, Blogging tips, etc. Please leave your comments in the comment section or contact me if you have any other questions.