Xiaomi Redmi K20 vs vivo Y97

Network
2G network

GSM 850, 900, 1800, 1900, CDMA 800

GSM 850, 900, 1800, 1900; CDMA 800 & TD-SCDMA
3G network

HSDPA 850, 900, 1700, 1900, 2100, TD-SCDMA 1900, 2000

HSDPA 850, 900, 2100
4G network

LTE frequency band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)

LTE frequency band 1(2100), 3(1800), 5(850), 8(900); LTE-TDD 1900, 2300, 2500, 2600 MHz
HSDPA speed

42 Mbps

-
HSUPA speed

5.76 Mbps

-
EV-DO speed

3.1 Mbps download, 1.8 Mbps upload

3.1 Mbps download, 1.8 Mbps upload
LTE speed

-

LTE, Cat6, 301 Mbps download, 51 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Aluminium alloy, glass

Plastic, glass
SIM

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

Dual SIM (Nano-SIM/Nano-SIM(microSD), dual stand-by)
Height

156.7 mm

155.9 mm
Width

74.3 mm

75.6 mm
Thickness

8.8 mm

8.1 mm
Weight

191 g

162 g
Colors

Black, Blue, Red

Black, Blue, Pink

Display
Display type

Super AMOLED capacitive touchscreen

S-IPS LCD capacitive touchscreen
Physical size

6.39 inches

6.3 inches
Resolution

1080 x 2340 pixels

1080 x 2280 pixels
Pixel density

403 ppi

400 ppi
Display colors

16777216

16777216
Protection

2.5D curved glass screen, Scratch resistant, Corning Gorilla Glass 6

2.5D curved glass screen, LTPS(Low Temperature PolySilicon)
Multitouch

Yes

Yes
Display features

HDR 10, Always-On display

-

Main camera
Camera type

Triple

Dual
Main camera

48 MP, f/1.8 , 26 mm, 1/2" , 0.8 µm, 2x optical zoom

16 MP, f/2.0
8 MP, f/2.4 , 53 mm, 1/4" , 1.12 µm

2 MP, f/2.4
13 MP, f/2.4 , 12 mm, 1/3" , 1.12 µm
Primary camera resolution

8000 x 6000 pixels

4608 x 3456 pixels
Primary camera video

2160p@30fps, 1080p@960fps

1080p@30fps
Primary camera flash

dual LED flash

LED flash
Primary camera phase detection autofocus

-

phase detection autofocus
Camera features

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

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

Connectivity
WLAN

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

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
Wi-Fi display

Yes

-
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C reversible connector

microUSB 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.0

v4.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

-
NFC

Yes

-
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
Beidou

Yes

Yes

Features
Sensors

Accelerometer, proximity, light, compass, in-display fingerprint, gyroscope, barometer, hall, step detector, step counter

Accelerometer, compass, gyroscope, light, proximity