As it's being sold primarily by Google through the Play devices store, it's easy (and accurate) to think of the Nexus 4 as a Google device. But it's still an LG-made phone, and as such qualifies for 50GB of free space on Box.net, thanks to a partnership between manufacturer and cloud storage provider.
To claim your free space, simply log into the Box.net app from your Nexus 4, and upon loading the app for the first time, you should see the message above, informing you that your cloud storage allowance has been upped. And as part of a time-limited deal, Box is also allowing you to share your good fortune with friends or co-workers, giving them access to 50GB too.
The promotion runs until Dec. 31, so you've got plenty of time to bag some extra bits, and free up some of the Nexus 4's precious (and limited) internal storage space. Check the Google Play link above to grab the official Box.net app for Android.