There's a built in screen protector film, i changed mine to tempoed glass and i was nurvous about doing it but it truely makes the phone more durable and so much better looking, especially because it removes the sony label. You should check out some videos of people doing it, it makes a huge difference and is on a scale of 1 to 10 like a 4 on the scale of easy to do.
I'm still loving my Xperia Z Ultra. 🙂 Even now it's still a great buy, well unless all you care is the compactness and the camera then don't consider this phone. 🙂 I love the big screen and the premium feel it gives when I'm holding it. If you ever consider buying this phone at this moment, please do, you won't regret it!