Huawei Mate 9 vs Oppo A31

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800, 1900

GSM 850, 900, 1800, 1900
3G network

HSDPA 800, 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1xEV-DO & TD-SCDMA

HSDPA 850, 900, 2100
4G network

LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 9(1800), 12(700), 17(700), 18(800), 19(800), 20(800), 26(850), 28(700), 29(700), 38(2600), 39(1900), 40(2300), 41(2500)

LTE frequency band 1(2100), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)
HSDPA speed

42.2 Mbps

42 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

-

LTE-A
LTE-A speed

LTE-A, (3CA) Cat12, 600 Mbps download, 150 Mbps upload

-
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

-

Plastic
SIM

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

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

156.9 mm

163.9 mm
Width

78.9 mm

75.5 mm
Thickness

7.9 mm

8.3 mm
Weight

190 g

180 g
Colors

Black, Ceramic White, Champagne Gold, Mocha Brown, Moonlight Silver, Space Gray

Black, White

Hardware
CPU

Octa-core

Octa-core
CPU

Quad-core 2.4 GHz Cortex-A73

Quad-core 2.3 GHz Cortex-A53
CPU(second)

quad-core 1.8 GHz Cortex-A53

quad-core 1.8 GHz Cortex-A53
Chipset

Hisilicon Kirin 960

Mediatek MT6765V/CB Helio P35
GPU

Mali-G71 MP8

PowerVR GE8320
Memory RAM

4 GB

4 GB
Internal storage

64 GB

128 GB
Memory card

microSD(dedicated slot or uses second SIM slot)

microSD, microSDHC, microSDXC
Memory card max

256 GB

256 GB
Storage

-

eMMC 5.1

Main camera
Camera type

Photo / Video

-
Camera type

-

Triple
Main camera

20 MP, f/2.2 , 2x optical zoom

12 MP, f/1.8
12 MP

2 MP, f/2.4 , 27 mm
2 MP, f/2.4
Primary camera resolution

-

4096 x 3072 pixels
Primary camera video

2160p@30fps

1080p@30fps
Primary camera optics

Leica optics

-
Primary camera Autofocus

phase detection & laser autofocus

-
Primary camera flash

dual-LED (dual tone) flash

LED flash
Primary camera optical image stabilization

optical image stabilization

-
Camera features

Geo-tagging, HDR, face/smile detection, panorama, touch focus

Autofocus, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro mode, phase detection autofocus

Connectivity
WLAN

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac

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
Wi-Fi display

-

Yes
WLAN WiFi Dual Band

Yes

Yes
WLAN DLNA

Yes

-
USB

Type-C reversible connector

microUSB 2.0
USB On-The-Go

-

Yes
Bluetooth

v4.2

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth EDR

Yes

-
Infrared

Yes

-
NFC

Yes

-
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

-
GALILEO

Yes

-
BDS

Yes

Yes

Features
Messaging SMS

SMS(threaded view)

-
Messaging MMS

MMS

-
Messaging Email

Email

-
Messaging Push Email

Push Email

-
Java

No

-
Sensors

Fingerprint, accelerometer, barometer, compass, gyro, proximity

Accelerometer, compass, fingerprint, light, proximity