How do they know that these photos were taken by the OnePlus 5? This is based on the photos’ EXIF data which mentions a particular model in the form of the A5000. In case you haven’t been following the OnePlus 5 news, the A5000 is said to be the model number of the handset which was also spotted at China’s radio regulation authority.
The EXIF data also revealed the resolution of the photos to be 4,640×3,480 which means that we’re most probably looking at a 16MP sensor for both cameras, with one presumably for zoom and one for wide angles, and when combined they’re supposed to help create a shallow depth-of-field look that you might achieve with DSLR or mirrorless camera.
Other than that, not much else is known about the phone. We have heard speculation that it could be powered by a Qualcomm Snapdragon 835, which we guess makes sense since it is the “best” chipset available today, and that OnePlus might even stuff the handset with as much as 8GB of RAM, but until then take it with a grain of salt.