Sony's de facto flagship right now is the Xperia Z3+ (AKA the Xperia Z4 in some regions). It runs a Snapdragon 810 processor, which has gained a reputation for running hot. Sony's camera software isn't doing anything to prove that assumption wrong. Watch in the video below as the camera app crashes in a few seconds because of high temperatures.
Sony is in a strange place these days. It has been on a 6-8 month flagship update schedule for several years, which is surely hard to maintain. Now the Z4 is out in Japan and the Snapdragon 810 at its heart is reportedly getting very, very toasty. So much so that carrier NTT Docomo has warning signs in retail stores. Ouch.
Sony has just announced the follow-up to its flagship device, the... why does it feel like I've written this story before? Oh, because I have. So a month after making its Xperia Z4 official in Japan, Sony is taking that device and releasing it with a more appropriate name for the global market: Xperia Z3+. Let's face it, the changes compared to the Z3 are minimal enough not to warrant a full number increase, so the switch back to the Z3+ is more honest on the company's behalf.
On the outside, the Z3+ looks almost exactly like the Z3, give or take a few slots and speaker grill placements.
Back at MWC, while everyone was waiting for Sony to announce its follow-up flagship, the Xperia Z4, the company decided to keep it under wraps and instead unveiled the mid-range Xperia M4 Aqua and the Xperia Z4 Tablet. Today, the phone has finally been made official in Sony's home turf of Japan during a press conference that made all of the Z4's details public but left out any information regarding its global release or price.
The Xperia Z4 follows the same design as its predecessors, which can be a good or a bad thing depending on how you look at it. The squarish shape, metal frame, and glass back are part of the brand's identity, but at the same time they're iterative and have become boring.
It would seem Sony is still engaged in the bizarre ritual of releasing a slightly tweaked version of its flagship smartphone every six months or so. The alleged Xperia Z4 has leaked repeatedly in recent days, and now it looks like T-Mobile might know something we don't. The carrier won't sell you a Z3 anymore, because apparently that phone is yesterday's news.
Sony announced the Xperia Z4 Tablet at this year's Mobile World Congress, but for information related to its phone of the same name, we're still clinging to leaks. Fortunately, our eyes may have now caught a glimpse of the upcoming flagship. @OnLeaks has posted an image of what he claims will be the Xperia Z4.