Cut down on these activities and you might find the Xperia Z Ultra can handle more than just 24 hours, but that almost might limit why you’d buy such a big device in the first place.

Let’s touch upon that, though, because really, this is a massive phone. Too massive, in some ways.

We’ve reviewed 7 inch tablets that worked as phones before, and we felt awkward carrying them knowing full well they were technically tablets with the phone capability switched on.

Here in the 6.4 inch Xperia Z Ultra, that feeling hasn’t moved very far because this size is just so noticeable. It’s hard to get in your pocket, and it doesn’t fit well in your hands unless they’re massive.

In fact, while Sony has nailed the button placement on a big phone better than LG did in the Flex, the insane size of the handset dents it negatively, making it hard to hold and carry, and awkward to keep in the pockets of your pants, unless you happen to have a particularly large or baggy pair.

It’s worth noting here that while the screen is 6.4 inches diagonally, the phone is 7.6 inches diagonally, as Sony has left almost 2 centimetres worth of borders on the top and bottom, increasing the size of an already big handset relatively dramatically.

This huge size is impossible to ignore, and while it will be easier to find in a bag, you generally feel more conscious as you hold it to your ear, not to mention keeping a grasp of the massive handset as you’re walking that also happens to be quite slippery.

We’re not saying that the Z Ultra is too big — that’s something only you will be able to work out for yourself — but the Sony Xperia Z Ultra feels more like a tablet than a phone, and this ridiculously large size combined with the extra space Sony has left on the handset doesn’t help to make holding the handset feel natural over a long period of time.

If you think the 4.7 inch HTC One is big, Sony's Xperia Z Ultra just swallows it whole.

The camera is a bit of a let down as well, especially when you compare it to some of the offerings Sony has given us in the past.

Unlike the camera on the Xperia Z1, you don’t see a 20 megapixel here, but rather an 8 megapixel module, with some of the weakest low light capabilities seen in ages.

Expect noise and a bit of pixelation in your photos, some even appearing in daylight when you’d least expect it. It’s not the greatest result, and certainly not what we expect from Sony.

Sample image from the Sony Xperia Z Ultra. More in the gallery at the end of the review.