The Xperia Z is Sony’s flagship smart phone for 2013 and arguably the best phone we’ve seen so far this year. As well as being waterproof and having a gorgeous 5-inch 1080p screen, it has a selection of Xperia-specific features. Here’s CNET’s run-down of how to get the best from this elegant Android powerhouse. 1. …

Now playing: Watch this: How to lock a lost Android phone 2:33 There’s no need to panic if you’ve lost an Android phone. That is, so long as you’ve already installed security software. With the right app, you can back up your contacts, lock the handset and even wipe your phone’s contents should it go walkies. Mobiles are more vulnerable …