Oppo K9 vs Xiaomi Mix Fold 3

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800

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

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

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

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

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 26, 34, 38, 39, 40, 41, 42
5G network

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

5G band 1, 3, 5, 8, 28, 38, 40, 41, 77, 78, 79 SA/NSA
HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE-A, 1200 Mbps download, 210 Mbps upload

LTE-A (CA)
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Aluminium alloy, glass

Glass front (folded), plastic front (unfolded), glass back or aramid fiber back, aluminum frame
SIM

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

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

159.1 mm

161.2 mm
Width

73.4 mm

73.5 mm
Thickness

7.9 mm

10.9 mm
Height unfolded

-

161.2 mm
Width unfolded

-

143.3 mm
Thickness unfolded

-

5.3 mm
Weight

172 g

255/259 g
Colors

Aurora, Black

Black, Gold

Display
Display type

Super AMOLED

Foldable LTPO OLED+
Physical size

6.43 inches

8.03 inches
Resolution

1080 x 2400 pixels

1916 x 2160 pixels
Pixel density

409 ppi

360 ppi
Display colors

16777216

1073741824
Protection

Scratch resistant, 2.5D curved glass screen

UTG glass, Corning Gorilla Glass Victus 2
Display features

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

120Hz, HDR10+, Dolby Vision, 1300 nits (peak)
Cover display

-

AMOLED
Cover display physical size

-

6.56 inches
Cover display resolution

-

1080 x 2520 pixels
Cover display features

-

120Hz, HDR10+, Dolby Vision, 2600 nits (peak)

Hardware
CPU

Octa-core

Octa-core
CPU

Single-core 2.8 GHz Kryo 475 Prime

Single-core 3.36 GHz Cortex-X3
CPU(second)

Single-core 2.4 GHz Kryo 475 Gold

dual-core 2.8 GHz Cortex-A715
CPU(third)

Hexa-core 1.8 GHz Kryo 475 Silver

Dual-core 2.8 GHz Cortex-A710
CPU(fourth)

Triple-core 2.0 GHz Cortex-A510
Chipset

Qualcomm SM7250-AC Snapdragon 768G 5G

Qualcomm SM8550-AC Snapdragon 8 Gen 2
GPU

Adreno 620

Adreno 740
Memory RAM

8 GB

12, 16 GB
Internal storage

128, 256 GB

256, 512, 1024 GB
Memory card

No

No
Storage

-

UFS 4.0

Main camera
Camera type

Triple

Quad
Main camera

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

(wide) , 50 MP, f/1.8 , 1/1.49" , 1.0 µm, 23 mm
(ultrawide) , 8 MP, f/2.2 , 119˚

(telephoto) , 10 MP, f/2.0 , 75 mm, 3.2x optical zoom
(macro) , 2 MP, f/2.4

(telephoto) , 10 MP, f/2.9 , 115 mm, 5x optical zoom
(ultrawide) , 12 MP, f/2.2 , 120˚ , 15 mm
Primary camera resolution

9280 x 6920 pixels

8190 x 6120 pixels
Primary camera video

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

8K@24fps, 4K@24/30/60fps, 1080p@30/60/120/240/960/1920fps, Dolby Vision HDR
Primary camera flash

LED flash

LED flash
Camera features

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

Autofocus, continuous autofocus, digital zoom, optical zoom, digital image stabilization, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, face unlock, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection autofocus, Dolby Vision, Leica Native Dual Quality, super night 2.0

Selfie camera
Selfie camera type

Single

Single
Selfie camera

(wide) , 32 MP, f/2.4 , 80˚ , 0.8 µm

(wide) , 20 MP, f/2.3 , 23 mm
Selfie camera resolution

6560 x 4928 pixels

-
Selfie camera features

Face unlock, digital image stabilization

Face unlock, HDR, Dolby Vision
Selfie camera video

1080p@30fps

1080p@30/60fps

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, 802.11ax, 802.11be
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 2.0

Type-C 3.2
USB On-The-Go

Yes

-
Bluetooth

v5.0

v5.3
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
BDS

Yes

Yes
QZSS

Yes

Yes
NavIC

-

Yes

Features
Sensors

Accelerometer, compass, fingerprint, gyroscope, proximity

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

Battery
Battery type

Li-Po

Li-Po
Battery capacity

4300 mAh

4800 mAh
Battery removable

Non-removable

Non-removable
Fast battery charging

VOOC 4.0 (100% in 35 min)

Quick Charge 4, 67W (100% in 40 min)
Fast wireless charging

-

Yes, 50W (100% in 55 min)