Chinese phone maker Vivo has made the X20 Plus UD official, the very first smartphone with an in-display fingerprint scanner. Although the phone’s best feature is highly sought after by many Android phone fans,
Vivo is using Synaptics’ Clear ID optical fingerprint scanner on the X20 Plus UD. The Clear ID sensor is only able to work on devices that have OLED displays. The scanner uses a light sensor system that is able to read fingerprints by emitting light through the gaps between the OLED screen’s pixels. If a screen protector is too thick, it may hinder the fingerprint scanner from accurately identifying the user’s fingerprint as light is reflected back to the sensor.

SPECIFITION

	Network	GSM/HSPA/LTE
	Display	Super AMOLED capacitive touchscreen
	Size	6.43 inches
	Resolution	1080 x 2160 pixels
	Operating System	Android 7.1.1 (Nougat)
	Chipset	Qualcomm MSM8956 Plus Snapdragon 660 GPU:Adreno 512
	Card slot	microSD up to 256 GB
	Internal	128 GB
	RAM	4 GB
	Primary Camera	Dual:12 MP Secondary:12 MP
	FEATURES	Sensors:Fingerprint,accelerometer,proximity,compass USB:microUSB 2.0 USB On-The-Go Bluetooth:5.0,A2DP,LE WLAN:Wi-Fi 802.11,dual-band,WiFi Direct,hotspot
	BATTERY	Non-removable Li-Ion 3900 mAh battery Fast battery charging 5V/4.5A