OnePlus Ace 2 vs Oppo K9

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800

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, 3, 4, 5, 8, 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, 40, 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 (CA), 1174 Mbps download, 150 Mbps upload

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

Yes

Yes
EDGE

Yes

Yes

Design
Build

Glass front (Asahi Glass), aluminum frame, glass back (Gorilla Glass 5)

Aluminium alloy, glass
SIM

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

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

163.4 mm

159.1 mm
Width

74.3 mm

73.4 mm
Thickness

8.7 mm

7.9 mm
Weight

204 g

172 g
Colors

Black, Blue

Aurora, Black

Hardware
CPU

Octa-core

Octa-core
CPU

Single-core 3.19 GHz Cortex-X2

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

Triple-core 2.75 GHz Cortex-A710

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

Quad-core 1.8 GHz Cortex-A510

Hexa-core 1.8 GHz Kryo 475 Silver
Chipset

Qualcomm SM8475 Snapdragon 8+ Gen 1

Qualcomm SM7250-AC Snapdragon 768G 5G
GPU

Adreno 730

Adreno 620
Memory RAM

12, 16 GB

8 GB
Internal storage

256, 512 GB

128, 256 GB
Memory card

No

No
Storage

UFS 3.1

-

Main camera
Camera type

Triple

Triple
Main camera

(wide) , 50 MP, f/1.8 , 24 mm, 1/1.56" , 1.0 µm, 10x digital zoom

(wide) , 64 MP, f/1.7 , 1/2.0" , 0.8 µm, 20x digital zoom , 80˚
(ultrawide) , 8 MP, f/2.2 , 120˚ , 16 mm, 1/4.0" , 1.12 µm

(ultrawide) , 8 MP, f/2.2 , 119˚
89˚ , (macro) , 2 MP, f/2.4 , 1/5" , 1.75 µm

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

8190 x 6120 pixels

9280 x 6920 pixels
Primary camera video

4K@30/60fps, 1080p@30/60/120/240fps, gyro-EIS

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

LED flash

LED flash
Camera features

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, laser autofocus

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 , 26 mm, 1/3.09" , 1.0 µm

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

4608 x 3456 pixels

6560 x 4928 pixels
Selfie camera features

Face unlock, HDR, face detection, digital image stabilization

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
Bluetooth

v5.3

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

-

aptX HD
NFC

Yes, eSE, HCE

No
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes
QZSS

Yes

Yes

Features
Sensors

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

Accelerometer, compass, fingerprint, gyroscope, proximity

Battery
Battery type

Li-Po

Li-Po
Battery capacity

5000 mAh

4300 mAh
Battery removable

Non-removable

Non-removable
Fast battery charging

SuperVOOC, 100W (100% in 25 min)

VOOC 4.0 (100% in 35 min)