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Vivo X51 5G vs Vivo X21

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Vivo X51 5G
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Vivo X21
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Vivo X51 5G Vivo X21
Build
Operating system
Android 10 Android V8.1 Oreo
Dimensions
158.5 x 72.8 x 8 mm (6.24 x 2.87 x 0.31 in) 154.5 x 74.8 x 7.4 mm
Weight
181 g 156 g
SIM
Dual SIM (Nano-SIM, dual stand-by) Hybrid Dual SIM, Dual Standby, (Nano-SIM)
Colors
Gray Black, Aurora White, Ruby Red
Launch
Released
Oct, 2020 Mar, 2018
Status
Available Available
Frequency
Data
GSM / CDMA / HSPA / LTE / 5G GPRS, Edge, 3G HSPA, 4G LTE
2G Bands
SIM 1: GSM 850 / 900 / 1800 / 1900
SIM 2: GSM 850 / 900 / 1800 / 1900
CDMA 800
SIM 1: GSM 850 / 900 / 1800 / 1900
SIM 2: GSM 850 / 900 / 1800 / 1900
3G Bands
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G Bands
LTE band 1(2100), 2(1900),... LTE band 1(2100), 2(1900),...
5G Bands
1, 3, 7, 8, 28, 38, 41, 77, 78 SA/NSA NO
Processor
CPU
Octa-core (1x2.4 GHz Kryo 475 Prime & 1x2.2 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver) Octa-core (4 x 2.2 GHz Kryo 260 + 4 x 1.8 GHz Kryo 260)
Chipset
Qualcomm SDM765 Snapdragon 765G (7 nm) Qualcomm SDM660 Snapdragon 660
GPU
Adreno 620 Adreno 512
DISPLAY
Technology
AMOLED capacitive touchscreen, 16M colors Super Amoled Capacitive Touchscreen, 16M Colors, Multitouch
Size
6.56 inches 6.3 inches
Resolution
1080 x 2376 pixels (~398 ppi density) 1080 x 2280 Pixels (~402 PPI)
Protection
NA Corning Gorilla Glass 3
Features
NA NA
Memory
Ram
8GB RAM 6GB RAM
Storage Memory
256GB Built-in 64/128GB Built-in
Memory Card
No microSD Card, (supports up to 256GB) (uses SIM 2 slot)
Camera
Main
Quad 48 MP, f/1.6, (wide), PDAF, Laser AF, gimbal OIS
8 MP, f/3.4, 135mm (periscope telephoto), 1/4.0", PDAF, OIS, 5x optical zoom
13 MP, f/2.5, 50mm (portrait), 1/2.8", 0.8µm, PDAF, 2x optical zoom
8 MP, f/2.2, 120°, 16mm (ultrawide), 1/4.0", 1.12µm
Dual 12 MP, (f/1.8, 1/2.5", dual pixel PDAF) + 5 MP, (f/2.4, depth sensor), LED Flash
Features
Dual-LED dual-tone flash, HDR, panorama Video 4K@30fps, 1080p@30fps, gyro-EIS Phase detection, Geo-tagging, touch focus, face detection, HDR, panorama, Video (1080p@30fps)
Front
32 MP, f/2.5, 26mm (wide), 1/2.8", 0.8µm
HDR Video 1080p@30fps
12 MP, f/2.0, Video (1080p@30fps)
Connectivity
WLAN (WIFI)
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot
Bluetooth
5.1, A2DP, LE, aptX HD v5.0 with A2DP, LE
GPS
Yes, with A-GPS, GLONASS, GALILEO, BDS Yes + A-GPS support, & GLONASS
USB
USB Type-C 2.0, USB On-The-Go microUSB 2.0, USB On-The-Go
NFC
Yes No
Features
Sensors
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass, color spectrum Accelerometer, Compass, Fingerprint (rear mounted), Proximity
Torch
Yes Yes
Extra
NA Document viewer, Photo/video editor
Battery
Capacity
Non-removable Li-Po ,4315 mAh (Li-ion Non removable), 3200 mAh
Charging
Fast charging 33W, 57% in 30 min - Fast battery charging
Pricing
Price
USD $913
See more devices with this price range >
USD $562
Resale Value
High High
Comparison Result
Result
8 Greens 2 Greens
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