vivo X21 UD - Technical characteristics and specifications

X21 UD technical characteristics

About the device:

vivo X21 UD is a mobile/cell phone with dimensions of 154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in), a weight of 156.2 grams, a screen size of 6.28 inches, 98.4 cm2 (~85.2% screen-to-body ratio) and a screen resolution of 1080 x 2280 pixels, 19:9 ratio (~402 ppi density).

It has a processor Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260), a graphics card Adreno 512, a 6 GB RAM memory and an internal memory of 128 GB expandable by memory card microSD, up to 256 GB (uses SIM 2 slot) .

The vivo X21 UD comes from the factory with the Android 8.1 (Oreo) operating system.

Technical information

Property	Value
Brand	vivo
Model	X21 UD

Connectivity
Network	GSM / CDMA / HSPA / LTE
2G connectivity	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G connectivity	HSDPA 850 / 900 / 1900 / 2100
4G connectivity	LTE band 1(2100), 2(1900), 3(1800), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)
5G connectivity	No
Network speed	HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps
GPRS	Yes
EDGE	Yes
Date announced	2018, March
Status	Available. Released 2018, March

Body
Dimensions	154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in)
Height	154.5
Thickness	7.4 mm
Weight gr.	156.2
Weight oz	5.5
SIM	Hybrid Dual SIM (Nano-SIM, dual stand-by)
Colors	Black, Ruby Red

Screen
Type of screen	Super AMOLED capacitive touchscreen, 16M colors
Screen resolution	1080 x 2280 pixels, 19:9 ratio (~402 ppi density)
Screen size	6.28 inches, 98.4 cm2 (~85.2% screen-to-body ratio)

Platform
OS	Android 8.1 (Oreo)
CPU	Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260)
Chipset	Qualcomm SDM660 Snapdragon 660 (14 nm)
GPU	Adreno 512

Storage and memory
Memory card	microSD, up to 256 GB (uses SIM 2 slot)
Internal memory	128 GB (See other devices with 128 GB)
RAM	6 GB (See other devices with 6 GB)

Cameras
Main camera	12 MP, f/1.8, 1/2.55", 1.4
Secondary camera	12 MP, f/2.0

Communications
WLAN	Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot
Bluetooth	5.0, A2DP, LE
GPS	Yes, with A-GPS, GLONASS
Radio	FM radio
USB	microUSB 2.0, USB On-The-Go
Sensors	Fingerprint (under display), accelerometer, proximity, compass