Nokia XR21 vs Oppo K9

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900; CDMA 800
3G network

HSDPA 850, 900, 1700(AWS), 1900, 2100

HSDPA 800, 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1x
4G network

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 32, 38, 39, 40, 41, 42, 43, 48, 66, 71

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

5G band 1, 2, 3, 5, 7, 20, 25, 28, 40, 41, 66, 71, 77, 78, 79 SA/NSA

5G band 1, 3, 28, 41, 77, 78 SA/NSA
HSDPA speed

45.4 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, 750 Mbps download, 211 Mbps upload

LTE-A, 1200 Mbps download, 210 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Glass front (Gorilla Glass Victus), plastic back, plastic frame

Aluminium alloy, glass
SIM

Single SIM (Nano-SIM, eSIM) or Dual SIM (Nano-SIM, dual stand-by)

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

168 mm

159.1 mm
Width

78.6 mm

73.4 mm
Thickness

10.6 mm

7.9 mm
Weight

231 g

172 g
Waterproof

IP68/IP69K (1.5m and 60 mins)

-
Dust proof

IP68/IP69K

-
MIL-STD-810H

Yes

-
Colors

Black, Green

Aurora, Black

Display
Display type

IPS LCD

Super AMOLED
Physical size

6.49 inches

6.43 inches
Resolution

1080 x 2400 pixels

1080 x 2400 pixels
Pixel density

406 ppi

409 ppi
Display colors

16777216

16777216
Protection

2D curved glass screen, Corning Gorilla Glass Victus

Scratch resistant, 2.5D curved glass screen
Display features

-

90Hz, 430 nits (typ), 750 nits (peak)

Hardware
CPU

Octa-core

Octa-core
CPU

Dual-core 2.2 GHz Kryo 660 Gold

Single-core 2.8 GHz Kryo 475 Prime
CPU(second)

Hexa-core 1.7 GHz Kryo 660 Silver

Single-core 2.4 GHz Kryo 475 Gold
CPU(third)

Hexa-core 1.8 GHz Kryo 475 Silver
Chipset

Qualcomm SM6375 Snapdragon 695 5G

Qualcomm SM7250-AC Snapdragon 768G 5G
GPU

Adreno 619

Adreno 620
Memory RAM

6 GB

8 GB
Internal storage

128 GB

128, 256 GB
Memory card

microSD, microSDHC, microSDXC

No
Memory card max

512 GB

-

Main camera
Camera type

Dual

Triple
Main camera

(wide) , 64 MP, f/1.8 , 1/2"

(wide) , 64 MP, f/1.7 , 1/2.0" , 80˚ , 0.8 µm, 20x digital zoom
(ultrawide) , 8 MP, f/2.2 , 1/4.0" , 1.12 µm

(ultrawide) , 8 MP, f/2.2 , 119˚
(macro) , 2 MP, f/2.4
Primary camera resolution

9280 x 6920 pixels

9280 x 6920 pixels
Primary camera video

4K@30fps, 1080p@30fps

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

dual-LED dual-tone flash

LED flash
Camera features

Autofocus, geotagging, panorama, HDR, touch focus, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, speedwarp

Autofocus, continuous 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, macro-mode, phase detection autofocus, contrast detection autofocus

Selfie camera
Selfie camera type

Single

Single
Selfie camera

(wide) , 16 MP, f/2.4

(wide) , 32 MP, f/2.4 , 80˚ , 0.8 µm
Selfie camera resolution

4608 x 3456 pixels

6560 x 4928 pixels
Selfie camera features

Face unlock, HDR

Face unlock, digital image stabilization
Selfie camera video

1080p@30fps

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

v5.1

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

aptX Adaptive

aptX HD
NFC

Yes (market dependent)

No
GPS

Yes, with dual-band A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes
QZSS

Yes

Yes
NavIC

Yes

-