Vivo X20 Plus UD comes with Android v7.1.1 OS, 6.43 inches Optic AMOLD display covered with corning gorilla Glass 5 and 1080 x 2160 pixels resolution + 376 PPI pixel density, It has Matte Black, Gold and Rose Gold color, Dual SIM Slot supports 2G, 3G and 4G LTE network.
The Smartphone has Dual 12MP+5MP rear camera having geo-tagging, touch focus, face detection, HDR and panorama features and 12MP front camera for selfie experience.
Vivo X20 Plus UD has Octa-core processor, Qualcomm Snapdragon 660 chipset and Adreno 512 GPU.
It has 4GB RAM and 128GB internal Storage and support upto 256GB Micro SD card slot. It brings Bluetooth 5.0 + reversible USB connector type-C and 3.5 mm Audio jack.
Here is 3900mAh battery with 5V 4A 20W fast charging but no wireless charger support.
The Smartphone has Fingerprint (under display), accelerometer, proximity, compass sensors.