The Z Ultra is rated for IP58, which means it’s protected against dust, and immersion of water beyond one metre, though not for an infinite depth, and generally down to a maximum of three metres.

Ports are mostly covered on the Xperia Z Ultra, and consist of a microUSB port covered by a flap on the left edge, a microSIM slot with a plastic tray and a microSD slot on the right edge covered by a longer flap, while the 3.5mm headset jack is at the top on the right edge.

Buttons are also few and far between, as Sony is relying on Android’s on-screen soft buttons for this handset.

As such, you’ll find all the physical buttons on the right edge, with a volume rocker just above the circular power button, with all remaining buttons existing on the touch screen, acting for whatever Google deems appropriate at the time, though usually for back, home, and multi-tasking.

The battery in the phone is rated for 3050mAh and is not removable.

Performance

In the Z Ultra, Sony is continuing its modern design used in previous handsets, taking the idea of a rectangular phone and literally running with it.

Just like in the Z and Z1, the phone is a rectangle, covered in glass on the front and back, with a trim of metal sitting atop some plastic.

It’s simple, elegant, and works quite well, also managing to be one of the thinner devices you’re likely to see, measuring in at 6.5mm, which is thinner than many of the flagships out there from other companies.

As per usual, the screen takes up most of the device, and with a 6.4 inch screen, that’s a big portion of the phone.

Thankfully, the button placement on the right edge makes the phone easy to grip, even with that massive screen size, so you shouldn’t have any problems there.

In the hands, it’s more comfortable than you’d expect, which given the size is pretty impressive, though Sony has helped this along by softening the edges.

The phone can be a tad slippery with all the glass on the front and back, so just make sure to grip it accordingly.