https://www.gsmarena.com/zte_nubia_x-9347.php

BODY Dimensions 154.1 x 73.3 x 8.4 mm (6.07 x 2.89 x 0.33 in)
Weight 181 g (6.38 oz)
Size 6.26 inches, 97.8 cm2 (~86.6% screen-to-body ratio) 1080 x 2280 pixels, 19:9 ratio

• Secondary display (on the back): OLED, 5.1 inches, 720 x 1520 pixels, Corning Gorilla Glass 3
  Android 8.1 (Oreo)
  Chipset Qualcomm SDM845 Snapdragon 845 (10 nm)
  Internal 128/256 GB, 8 GB RAM or 64 GB, 6 GB RAM
  MAIN CAMERA Dual 16 MP, f/1.8, PDAF
  24 MP, f/1.7, PDAF
  Features Dual-LED dual-tone flash, HDR, panorama
  3.5mm jack No

FEATURES Sensors Dual fingerprint (side-mounted),
BATTERY Non-removable Li-Po 3800 mAh battery
Price About 450 EUR

plutôt très sympa comme concept !
https://www.phonandroid.com/zte-nubia-x-officiel-2-ecrans-2-capteurs-dempreintes-et-pas-dencoche.html