It would be the perfect candidate for a OnePlus 3 Mini, but Carl Pei
insists that it's not. So what is
this mystery 4.6 inch high-powered phone, then?
Here are the details from its GFXBench listing
Android 6.0.1 (CyanogenMod)
1920 x 1080, 4.6"
Touch screen with at least 5 finger gesture support
Qualcomm Snapdragon 820
2x Kryo @ 2.1 GHz + 2x Kryo @ 1.6 GHz - ARMv8
Qualcomm Adreno™ 530
Picture: 15 MP (4640 x 3480)
Video: UHD (4K) (3840 x 2160)
auto focus / face detection / flash / HDR photo
Picture: 7 MP (3264 x 2448)
Video: 3264 x 1836
accelerometer / barometer / bluetooth / compass / gps / gyroscope / light sensor / nfc / pedometer / proximity sensor / sim cards (1) / wifi
For comparison's sake, 4.6 inches is smaller than both the original Moto X and the current iPhone 6s (each with 4.7 inch displays). Whatever this thing turns out to be, it will definitely be going against the grain of current phablet-sized phones.