Meizu 21 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), 2100

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

LTE frequency band 1, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41

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

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

5G band 1, 3, 28, 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, 210 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Display
Display type

AMOLED

Super AMOLED
Physical size

6.55 inches

6.43 inches
Resolution

1080 x 2340 pixels

1080 x 2400 pixels
Pixel density

393 ppi

409 ppi
Display colors

1073741824

16777216
Protection

Scratch resistant, 2.5D curved glass screen

Scratch resistant, 2.5D curved glass screen
Display features

120Hz, HDR10+, 600 nits (typ), 1100 nits (HBM), 1800 nits (peak)

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

Hardware
CPU

Octa-core

Octa-core
CPU

Single-core 3.3 GHz Cortex-X4

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

Penta-core 3.2 GHz Cortex-A720

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

Dual-core 2.3 GHz Cortex-A520

Hexa-core 1.8 GHz Kryo 475 Silver
Chipset

Qualcomm SM8650-AB Snapdragon 8 Gen 3

Qualcomm SM7250-AC Snapdragon 768G 5G
GPU

Adreno 740

Adreno 620
Memory RAM

8, 12 GB

8 GB
Internal storage

256, 512 GB

128, 256 GB
Memory card

No

No
Storage

UFS 4.0

-

Main camera
Camera type

Triple

Triple
Main camera

(wide) , 200 MP, f/1.7 , 22 mm

(wide) , 64 MP, f/1.7 , 80˚ , 1/2.0" , 0.8 µm, 20x digital zoom
(ultrawide) , 13 MP, f/2.4 , 122˚ , 15 mm

(ultrawide) , 8 MP, f/2.2 , 119˚
(wide) , 5 MP, f/2.4 , 27 mm

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

-

9280 x 6920 pixels
Primary camera video

8K, 4K, 1080p; gyro-EIS

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

Ring-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, macro-mode, phase detection autofocus, laser autofocus, DarkVision, pure fusion, live photo, super night view 5.0

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) , 32 MP, f/2.4

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

-

6560 x 4928 pixels
Selfie camera features

Face unlock, face detection, 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, 802.11be

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

v5.4

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

-

aptX HD
Infrared

Yes

-
NFC

Yes

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

-