The issue focused on five devices: tablets, smartphones, laptops and desktop computers. Microsoft Windows software was available for phones and tablets as well as PCs.

An expanded version of this report appears on WSJ.com.

Popular on WSJ.com:

By PCWorld staff writer Robert J. JamesonPhoebe Brings Black Peter & To The Rescue (Video)

If you're one of those fans who follow Phoebe's digital music career through YouTube videos