Last year LG released a phone in Japan called the LG Isai which ended up having almost identical specs to the LG G2, including the same screen, processor, RAM and camera.
Now the company has unveiled the LG Isai FL - and, as with last year's model, we don't expect to see it go on sale globally but there's a good chance that it's giving us a look at what to expect from the LG G3.
So what are we looking at? The LG Isai FL has a 5.5-inch 2560 x 1440 QHD display with a pixel density of 538 pixels per inch - and we've already had confirmation that the LG G3 will be rocking the same screen.
Same but different
Moving under the hood the Isai FL has a Snapdragon 801 quad-core processor and 2GB of RAM.
We've heard conflicting rumours as to whether the LG G3 will have 2- or 3GB of RAM - this could settles that, or it may turn out to be an area where the G3 differs from the Isai FL. It's tough to say, at this point.
The Isai FL also has a 13.2 megapixel camera, which matches with the majority of the LG G3 camera rumours, while there's also a secondary 1.3 megapixel camera on the front.
The handset runs Android 4.4.2 KitKat, has 32GB of storage, and its dimensions are roughly 76 x 145 x 10.5mm. The battery is a 3000 mAh juicepack - but it's worth noting that the dimensions and battery differed slightly between last year's Isai and the LG G2.
So how close these specs are to what we'll see on the LG G3 is hard to say, but given the similarities between the original Isai and the G2, we'd say they're pretty close.