Oppo A3 vs Samsung Galaxy S8

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800 & TD-SCDMA

GSM 850, 900, 1800, 1900
3G network

HSDPA 850, 900, 1900, 2100; HSDPA 850, 1700(AWS), 1900, 2100

HSDPA 850, 900, 1700(AWS), 1900, 2100
4G network

LTE frequency band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500); LTE frequency band 1(2100), 3(1800), 4(1700/2100), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)

LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 17(700), 20(800), 28(700)
HSDPA speed

-

42.2 Mbps
HSUPA speed

-

5.76 Mbps
HSPA speed

HSPA

-
LTE speed

LTE

-
LTE-A speed

-

LTE-A, (4CA) Cat16, 1024 Mbps download, 150 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Metal

Corning Gorilla Glass 5 back panel
SIM

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

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

156 mm

148.9 mm
Width

75.3 mm

68.1 mm
Thickness

7.8 mm

8 mm
Weight

159 g

155 g
Payment

-

Samsung Pay(Visa, Mastercard)
Waterproof

-

IP68 - 1.5 m and 30 minutes
Dust proof

-

IP68
Colors

Garnet Red, Knight Black, Soybean Meal, Stardust Silver

Arctic Silver, Coral Blue, Maple Gold, Midnight Black, Orchid Gray

Display
Display type

LTPS IPS LCD capacitive touchscreen

Super AMOLED capacitive touchscreen
Physical size

6.2 inches

5.8 inches
Resolution

1080 x 2280 pixels

1440 x 2960 pixels
Pixel density

405 ppi

570 ppi
Display colors

16777216

16777216
Protection

2.5D curved glass screen; LTPS(Low Temperature PolySilicon)

Corning Gorilla Glass 5
Multitouch

Yes

Yes

Hardware
CPU

Octa-core

Octa-core
CPU

Quad-core 2 GHz Cortex-A73

Quad-core 2.3 GHz
CPU(second)

quad-core 2 GHz Cortex-A53

quad-core 1.7 GHz
Chipset

Mediatek Helio P60

Qualcomm MSM8998 Snapdragon 835 - US / Exynos 8895 Octa - EMEA
GPU

Mali-G72 MP3

Adreno 540 - US
Memory RAM

4 GB

4 GB
Internal storage

128 GB

64 GB
Memory card

microSD

microSD
Memory card max

256 GB

256 GB

Main camera
Main camera

16 MP, f/1.8

12 MP, f/1.7 , 26 mm
Primary camera resolution

4608 x 3345 pixels

-
Primary camera video

1080p@30fps

2160p@30fps, 1080p@60fps
Primary camera Autofocus

phase detection autofocus

-
Primary camera flash

LED flash

LED flash
Primary camera optical image stabilization

-

optical image stabilization
Primary camera phase detection autofocus

-

phase detection autofocus
Primary camera video dual video

-

dual-video record
Primary camera video hdr

-

HDR
Camera features

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

1.4 µm pixel size, 1/2.5" sensor size, Auto HDR, face/smile detection, geo-tagging, panorama, simultaneous 4K video and 9MP image recording, touch focus

Connectivity
WLAN

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

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

microUSB 2.0

Type-C 1.0 reversible connector
USB On-The-Go

Yes

-
Bluetooth

v4.2

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

-

Yes
NFC

-

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

-

Yes
GALILEO

-

Yes
BDS

-

Yes

Features
Messaging SMS

SMS(threaded view)

SMS(threaded view)
Messaging MMS

MMS

MMS
Messaging Email

Email

Email
Messaging IM

-

IM
Messaging Push Email

Push Email

-
Messaging Push Mail

-

Push Mail
Java

-

No
Sensors

Accelerometer, compass, gyro, proximity

Iris scanner, SpO2, accelerometer, barometer, compass, fingerprint (rear-mounted), gyro, heart rate, proximity