Oppo K9 vs Samsung Galaxy Z Fold4

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 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, 3, 4, 5, 8, 12, 13, 17, 20, 25, 38, 39, 40, 41
5G network

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

5G band 1, 3, 5, 20, 41, 77, 78 SA/NSA/Sub6/mmWave
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 (7CA), Cat20, 2000 Mbps download, 200 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Aluminium alloy, glass

Glass front (Gorilla Glass Victus+) (folded), plastic front (unfolded), glass back (Gorilla Glass Victus+), aluminum frame
SIM

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

Up to two Nano SIM and one eSIM
Height

159.1 mm

155.1 mm
Width

73.4 mm

67.1 mm
Thickness

7.9 mm

14.2-15.8 mm
Height unfolded

-

155.1 mm
Width unfolded

-

130.1 mm
Thickness unfolded

-

6.3 mm
Weight

172 g

263 g
Stylus

-

Yes
Payment

-

Samsung Pay (Visa, MasterCard certified)
Waterproof

-

IPX8, 1.5m and 30 minutes
Colors

Aurora, Black

Black, Beige, Burgundy, Graygreen

Display
Display type

Super AMOLED

Foldable Dynamic AMOLED 2X
Physical size

6.43 inches

7.6 inches
Resolution

1080 x 2400 pixels

1812 x 2176 pixels
Pixel density

409 ppi

373 ppi
Display colors

16777216

16777216
Protection

Scratch resistant, 2.5D curved glass screen

-
Display features

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

120Hz, HDR10+, 1200 nits (peak)
Cover display

-

Dynamic AMOLED 2X
Cover display physical size

-

6.2 inches
Cover display resolution

-

904 x 2316 pixels
Cover display features

-

120Hz, 120Hz, Corning Gorilla Glass Victus+

Hardware
CPU

Octa-core

Octa-core
CPU

Single-core 2.8 GHz Kryo 475 Prime

Single-core 3.19 GHz Cortex-X2
CPU(second)

Single-core 2.4 GHz Kryo 475 Gold

Triple-core 2.75 GHz Cortex-A710
CPU(third)

Hexa-core 1.8 GHz Kryo 475 Silver

Quad-core 1.8 GHz Cortex-A510
Chipset

Qualcomm SM7250-AC Snapdragon 768G 5G

Qualcomm SM8475 Snapdragon 8+ Gen 1
GPU

Adreno 620

Adreno 730
Memory RAM

8 GB

12 GB
Internal storage

128, 256 GB

256, 512, 1024 GB
Memory card

No

No
Storage

-

UFS 3.1

Main camera
Camera type

Triple

Triple
Main camera

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

(wide) , 50 MP, f/1.8 , 1.0 µm, 24 mm
(ultrawide) , 8 MP, f/2.2 , 119˚

(telephoto) , 10 MP, f/2.4 , 67 mm, 1.0 µm, 3x optical zoom
(macro) , 2 MP, f/2.4

(ultrawide) , 12 MP, f/2.2 , 123˚ , 12 mm, 1.12 µm
Primary camera resolution

9280 x 6920 pixels

8190 x 6144 pixels
Primary camera video

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

4K@60fps, 1080p@60/240fps (gyro-EIS), 720p@960fps (gyro-EIS), HDR10+
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 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, phase detection autofocus
Cover camera

10 MP, 26 mm, f/2.2 , 1.22 µm, 1/3"

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
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

Yes
Bluetooth

v5.0

v5.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

aptX HD

aptX HD
NFC

No

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes
QZSS

Yes

-

Features
Sensors

Accelerometer, compass, fingerprint, gyroscope, proximity

Accelerometer, barometer, compass, fingerprint, gyroscope, proximity

Battery
Battery type

Li-Po

Li-Po
Battery capacity

4300 mAh

4400 mAh
Battery removable

Non-removable

Non-removable
Fast battery charging

VOOC 4.0 (100% in 35 min)

Quick Charge, 25W (50% in 30 min)
Wireless reverse charging

-

Yes, 4.5W
Fast wireless charging

-

Yes, 15W