Xiaomi Redmi K50 Ultra vs vivo V21

Xiaomi Redmi K50 Ultra

vivo V21

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800

GSM 850, 900, 1800, 1900
3G network

HSDPA 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1x

HSDPA 850, 900, 1700(AWS), 1900, 2100
4G network

LTE frequency band 1, 3, 4, 5, 8, 18, 19, 26, 34, 38, 39, 40, 41, 42

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 39, 40, 41
5G network

5G band 1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA

-
HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
EV-DO speed

-

EV-DO Rev.A 3.1 Mbps download, 1.8 Mbps upload
LTE speed

LTE-A

LTE-A, 1200 Mbps download, 150 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Aluminium alloy, glass

Glass front, plastic frame, plastic back
SIM

Dual SIM (Nano-SIM, dual stand-by)

Hybrid Dual SIM (Nano-SIM, dual stand-by)
Height

163.1 mm

159.7 mm
Width

75.9 mm

73.9 mm
Thickness

8.6 mm

7.3 mm
Weight

202 g

176 g
Colors

Black, Blue, Gray, Mercedes AMG

Blue, Sunset Dazzle

Display
Display type

OLED

AMOLED
Physical size

6.67 inches

6.44 inches
Resolution

1220 x 2712 pixels

1080 x 2400 pixels
Pixel density

446 ppi

409 ppi
Display colors

16777216

16777216
Protection

Scratch resistant, 2.5D curved glass screen, Corning Gorilla Glass Victus

Scratch resistant, 2.5D curved glass screen
Display features

144Hz, HDR10+, Dolby Vision

-

Main camera
Camera type

Triple

Triple
Main camera

(wide) , 108 MP, f/1.6 , 1/1.67" , 0.64 µm

(wide) , 64 MP, f/1.8 , 1/1.72" , 0.8 µm, 26 mm
(ultrawide) , 8 MP, f/2.2 , 120˚

(ultrawide) , 8 MP, f/2.2 , 120˚ , 16 mm, 1/4.0" , 1.12 µm
(macro) , 2 MP, f/2.4

(macro) , 2 MP, f/2.4
Primary camera resolution

12000 x 9000 pixels

9280 x 6920 pixels
Primary camera video

4K@30/60fps, 1080p@30/60/120/240/960fps

4K@30fps (no OIS), 1080p@30/60fps
Primary camera flash

LED flash

LED flash
Camera features

Autofocus, continuous shooting, digital zoom, optical zoom, digital image stabilization, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection autofocus, flicker sensor

Autofocus, continuous shooting, digital zoom, digital image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro-mode, phase detection autofocus

Selfie camera
Selfie camera type

Single

Single
Selfie camera

(wide) , 20 MP

(wide) , 44 MP, f/2.0
Selfie camera features

HDR

Autofocus, face unlock, HDR
Selfie camera video

1080p@30/60fps, 720p@120fps

4K@30fps (no OIS), 1080p@30fps

Connectivity
WLAN

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11ax

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 2.0

Type-C 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.2

v5.1
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Infrared

Yes

-
NFC

Yes

No
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes
QZSS

Yes

-
NavIC

Yes

-

Features
Sensors

Accelerometer, color spectrum, compass, fingerprint, gyroscope, proximity

Accelerometer, compass, fingerprint, gyroscope, proximity

Battery
Battery type

Li-Po

Li-Po
Battery capacity

5000 mAh

4000 mAh
Battery removable

Non-removable

Non-removable
Fast battery charging

Quick Charge 3+, 120W (100% in 19 min)

Yes (63% in 30 min)

Xiaomi Redmi K50 Ultra comparisons