You just bought Nexus 4 and you don't know anything about Android operating system, so I will guide you through literally first steps on this great phone.
In case you didn't know, you can turn you LG G2 Android powered smartphone into a Wi-Fi hotspot and use it to surf the web with any other wireless device like notebook, tablet or a smartphone.
If you want to receive your Gmail emails, synchronize and backup your contacts, calendars, media or to simply download an app from the Play Store, you need to add your Gmail account on the LG G2.
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.
Let me show you how simple is is to turn your Samsung Galaxy S3 into a wireless hotpot you then connect to with any other WiFi device and surf the Internet.
If you are accessing certain websites very often with your Android powered Samsung Galaxy S2, I suggest you to add a bookmark shortcut to your phones Home screen.