vivo X21
Network
Technology
GSM / CDMA / HSPA / LTE
2G bands
GSM 850 / 900 / 1800 / 1900 – SIM 1 & SIM 2
CDMA 800 & TD-SCDMA
3G bands
HSDPA 850 / 900 / 1900 / 2100
4G bands
1, 2, 3, 5, 8, 34, 38, 39, 40, 41
Speed
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Launch
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)
Weight
156.2 g (5.50 oz)
Build
Glass front (Gorilla Glass 3), aluminum back, aluminum frame
SIM
Hybrid Dual SIM (Nano-SIM, dual stand-by)
Display
Type
Super AMOLED
Size
6.28 inches, 98.4 cm2 (~85.2% screen-to-body ratio)
Resolution
1080 x 2280 pixels, 19:9 ratio (~402 ppi density)
Protection
Corning Gorilla Glass 3
Platform
OS
Android 8.1 (Oreo), Funtouch 4
Chipset
Qualcomm SDM660 Snapdragon 660 (14 nm)
CPU
Octa-core (4×2.2 GHz Kryo 260 Gold & 4×1.8 GHz Kryo 260 Silver)
GPU
Adreno 512
Memory
Card slot
microSDXC (uses shared SIM slot)
Internal
64GB 6GB RAM, 128GB 6GB RAM
eMMC 5.1
Main Camera
Dual
12 MP, f/1.8, 1/2.55″, 1.4µm, dual pixel PDAF
5 MP, f/2.4, (depth)
Features
LED flash, HDR, panorama
Video
1080p@30fps
Selfie camera
Single
12 MP, f/2.0, (wide), 1/2.8″, 1.28µm
Video
1080p@30fps
Sound
Loudspeaker
Yes
3.5mm jack
Yes
32-bit/192kHz Hi-Res audio
Comms
WLAN
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
5.0, A2DP, LE
Positioning
GPS, GLONASS
NFC
No
Radio
FM radio
USB
microUSB 2.0, OTG
Features
Sensors
Fingerprint (rear-mounted), accelerometer, proximity, compass
Battery
Type
Li-Ion 3200 mAh, non-removable
Charging
18W wired
Misc
Colors
Black, Aurora White, Ruby Red
Models
1725, X21A
Price
About 450 EUR