Let me show you how to add a Google account to a Samsung Galaxy SIII so you can read you Gmail email, download apps from the Play Store and synchronize you Google Documents.
If you dont't want that every time you take a picture with your Android device, it gets instantly uploaded to your Google+ profile, this tutorial's for you.
You can organize your apps in so called folders on your Nexus 4. For instance you can put all your games into a games folder and this is how you do it.
Bookmarks are a great way to save the website addresses you don't want to forget about, this is how you add them to a stock web browser on your Samsung Galaxy S2.
If your phone doesn't want to boot up again after the update, it gets stuck in a black screen, follow this tutorial where we root the Galaxy SII with Odin and put an official Samsung Android 4 ICS on it.