In terms of hardware and software, the Sony Xperia Z3+ delivers a quite impressive array of new features - on paper, anyway - despite the name suggesting only minor updates.
Recent iterations of the Xperia Z series of smartphones haven't changed all that much from one model to the next, each update receiving minimal alterations here and there while generally retaining the same overall look and design theme.
The Xperia Z3+ isn't any different. It is 0.4mm thinner and 8g lighter than the Xperia Z3, but looks almost identical and only the particularly observant will notice any real difference in design before a closer inspection.
Saying that, the weight difference is noticeable for those familiar with the Xperia Z3. However, the slimmer chassis, which now measures 6.9mm instead of 7.3mm, isn't as noticeable, feeling much the same as before.
We were always fans of the Xperia Z series' sleekness, so minor design changes are no bad thing. Even better, Sony has made the edges even smoother than before with fewer seams on the frames, so it's less boxy-looking than previous iterations, such as the Xperia Z2. This means it's also easier to hold, while still managing to pack the same sized 5.2in screen.
Another great feature in the Xperia Z3+'s design is that, like the Xperia Z3, Xperia Z2 and Xperia Z1, the Xperia Z3+ can be dunked in water for up to 30 minutes at a depth of 1.5m, Sony claims, owing to its dust-resistant and waterproof IP65 and IP68 certification, the highest possible waterproof rating.
However, the biggest design change in this model is that the Xperia Z3+ comes with a capless USB port, making it easier and more convenient to charge while remaining waterproof.
It is worth noting, though, that you will have to wait for the ports to dry out before charging if the handset has been immersed in water. No-one likes an electric shock.
The display on the Sony Xperia Z3+ is one of its most impressive features, with the same 1080x1920 pixel count as its predecessor in a 5.2in screen, so it's not surprising that Sony has kept this the same.
The display is vibrant and a pleasure to gawp at for hours on end, thanks to the firm's Triluminos display technology seen on its television sets. This is down to the pixel density of 424ppi, which is an impressive feature for a screen of this size as it means that pixels are almost invisible when inspecting the display close up.
It also means that viewing films on the Xperia Z3+'s display is a delight, as they appear brilliantly crisp.
One of our favourite display-related features is that Sony has equipped the Xperia Z3+ screen with IPS technology, giving it wide viewing angles, with deep colour representation even from tight viewing angles. We seriously believe that there's no nicer smartphone screen out there right now.