Oppo K9s vs Xiaomi Redmi K30

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800

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

HSDPA 800, 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1x

HSDPA 850, 900, 2100; CDMA2000 1xEV-DO
4G network

LTE frequency band 1, 3, 4, 5, 8, 19, 28, 34, 38, 39, 40, 41

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

5G band 1, 28, 41, 77, 78 SA/NSA

-
HSDPA speed

42.2 Mbps

42 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE-A, 1200 Mbps download, 210 Mbps upload

LTE-A
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Plastic, glass

Aluminium alloy, glass
SIM

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

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

164.4 mm

165.3 mm
Width

75.9 mm

76.6 mm
Thickness

8.5 mm

8.8 mm
Weight

199 g

208 g
Colors

Aurora, Black, Silver

Blue, Purple, Red

Display
Display type

IPS LCD

IPS LCD capacitive touchscreen
Physical size

6.59 inches

6.67 inches
Resolution

1080 x 2412 pixels

1080 x 2400 pixels
Pixel density

401 ppi

395 ppi
Display colors

16777216

16777216
Protection

Scratch resistant, 2.5D curved glass screen, Panda glass

2.5D curved glass screen, Scratch resistant, Corning Gorilla Glass 5, Oleophobic coating
Multitouch

-

Yes
Display features

120Hz, 480 nits (typ), 600 nits (HBM)

HDR10, 120Hz sampling rate

Main camera
Camera type

Triple

Quad
Main camera

(wide) , 64 MP, f/1.7 , 81˚ , 26 mm, 1/2.0" , 0.8 µm, 20x digital zoom

64 MP, f/1.9 , 26 mm, 1/1.7" , 0.8 µm
(ultrawide) , 8 MP, f/2.2 , 120˚ , 1/4" , 1.12 µm

8 MP, f/2.2 , 1/4" , 1.12 µm, 13 mm
89˚ , (macro) , 2 MP, f/2.4 , 1/5" , 1.75 µm

2 MP, f/2.4 , 1/5" , 1.75 µm
2 MP, f/2.4 , 1/5" , 1.75 µm
Primary camera resolution

9248 x 6936 pixels

9248 x 6944 pixels
Primary camera video

4K@30fps, 1080p@30/60/120fps; gyro-EIS

2160p@30fps, 1080p@30/120fps, 720p@960fps
Primary camera flash

LED flash

dual LED flash
Camera features

Autofocus, continuous 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, contrast detection autofocus

Autofocus, continuous shooting, digital 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

Selfie camera
Selfie camera type

Single

Dual
Selfie camera

(wide) , 16 MP, f/2.0 , 79˚

20 MP, f/2.2 , 27 mm, 1/3.4" , 0.8 µm
2 MP, f/2.4 , 1/5" , 1.75 µm
Selfie camera resolution

4608 x 3456 pixels

5963 x 3354 pixels
Selfie camera features

Face unlock, HDR

-
Selfie camera video

1080p@30fps, gyro-EIS

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
Wi-Fi display

-

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 2.0

Type-C reversible connector
USB On-The-Go

Yes

Yes
Bluetooth

v5.2

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

aptX HD

-
Infrared

-

Yes
NFC

No

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
Beidou

-

Yes
BDS

Yes

-
QZSS

Yes

-

Features
Sensors

Accelerometer, compass, fingerprint, gyroscope, proximity

Accelerometer, barometer, compass, geomagnetic, gravity, gyroscope, pedometer, proximity, light, side-mounted fingerprint sensor