Notification Center

This is our new notification center. Inside, you will find updates on the most important things happening right now.

Notifications

Hmm, push notifications seem to be disabled in your browser. You can enable them from the 'Settings' icon in the URL bar of your browser.

www.phonearena.com

OPPO R9s vs Samsung Galaxy A11 vs Samsung Galaxy A21

Compare phone and tablet specifications of up to three devices at once.

Comparison mode:

Display

Size:

5.5 inches
6.4 inches
6.5 inches

Resolution:

1920 x 1080 pixels, 401 PPI
1560 x 720 pixels, 19.5:9 ratio, 268 PPI
1600 x 720 pixels, 20:9 ratio, 270 PPI

Technology:

AMOLED
IPS LCD
IPS LCD

Refresh rate:

60Hz
60Hz

Screen-to-body:

73.28 %
80.92 %
79.20 %

Features:

Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor

Hardware

System chip:

Qualcomm Snapdragon 625 8953
Qualcomm Snapdragon 450 SDM450 (14 nm)
Mediatek Helio P35 MT6765 (12 nm)

Processor:

Octa-core, 2000 MHz, ARM Cortex-A53, 64-bit
Octa-core, 8x 1.8GHz Cortex-A53, 64-bit
Octa-core, 4x 2.3GHz Cortex-A53 + 4x 1.8GHz Cortex-A53, 64-bit

GPU:

Adreno 506
Adreno 506
PowerVR GE8320

RAM:

4GB LPDDR3
2GB LPDDR3
3GB LPDDR4

Internal storage:

64GB
32GB, available to use: 20.3 GB
32GB (eMMC 5.1), available to use: 19.8 GB

Storage expansion:

microSDXC up to 256 GB
microSDXC up to 512 GB
microSDXC up to 512 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

Android (6.0 Marshmallow), OPPO ColorOS UI
Android (11, 10)
Android (10), Samsung One UI

Battery

Capacity:

3010 mAh
4000 mAh
4000 mAh

Type:

Li - Polymer, Not user replaceable
Not user replaceable
Li - Polymer, Not user replaceable

Charging:

OPPO VOOC
Fast charging
Fast charging

Max charge speed:

Wired: 15.0W
Wired: 15.0W

Camera

Rear:

Single camera
Triple camera
Quad camera

Main camera:

16 MP (Autofocus, CMOS image sensor)
13 MP (Autofocus)
16 MP (PDAF)

Specifications:

Aperture size: F1.7
Aperture size: F1.8; Focal length: 27 mm
Aperture size: F1.8; Sensor size: 1/3.06"; Pixel size: 1 μm

Second camera:

5 MP (Ultra-wide)
8 MP (Ultra-wide)

Specifications:

Aperture size: F2.2
Aperture size: F2.2; Sensor size: 1/4"; Pixel size: 1.12 μm

Third camera:

2 MP (Depth information)
2 MP (Macro)

Specifications:

Aperture size: F2.4
Aperture size: F2.4

Fourth camera:

2 MP (Depth information)

Specifications:

Aperture size: F2.4

Video recording:

3840x2160 (4K UHD), 1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD) (30 fps)

Features:

HDR, Video calling, Video sharing

Front:

16 MP
8 MP
13 MP

Video capture:

1920x1080 (Full HD)
1920x1080 (Full HD)

Design

Dimensions:

6.02 x 2.93 x 0.26 inches (153 x 74.3 x 6.58 mm)
6.42 x 3.00 x 0.31 inches (163.1 x 76.3 x 8.0 mm)
6.61 x 3.02 x 0.32 inches (167.8 x 76.7 x 8.1 mm)

Weight:

5.19 oz (147.0 g)
6.24 oz (177.0 g)
6.81 oz (193.0 g)

Materials:

Back: Plastic; Frame: Plastic
Back: Plastic; Frame: Plastic

Biometrics:

Fingerprint (touch)
2D Face unlock, Fingerprint (touch)
Fingerprint (touch)

Keys:

Left: Volume control; Right: Lock/Unlock key
Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key

Colors:

Gold, Pink
White, Red, Black, Blue
Black

Cellular

LTE (FDD):

Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)
Bands 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 12(700 a), 13(700 c), 20(800 DD), 28(700 APT), 66(AWS-3)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 17(700 b), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 66(AWS-3), 71(600)

LTE (TDD):

Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)

UMTS:

Bands 5(850), 8(900), 2(1900), 1(2100)
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)

Data Speed:

LTE, HSPA
LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM:

Yes

SIM type:

Nano SIM
Nano SIM
Nano SIM

HD Voice:

Yes
Yes

VoLTE:

Yes
Yes

Multimedia

Headphones:

3.5mm jack
3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Loudspeaker
Earpiece, Loudspeaker

Features:

Album art cover, Background playback

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM

Connectivity & Features

Bluetooth:

4.1
4.2
5.0

Wi-Fi:

802.11 a, b, g, n, ac, dual-band
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot

USB:

microUSB, USB 2.0
Type-C (reversible), USB 2.0
Type-C (reversible), USB 2.0

Features:

Mass storage device, OTG, Charging
Charging
Charging

Location:

GPS, A-GPS
GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning

Sensors:

Accelerometer, Gyroscope, Compass
Accelerometer
Accelerometer, Gyroscope, Compass

Other:

Tethering, Computer sync, OTA sync
UMA (Wi-Fi Calling)
NFC

Hearing aid compatible:

M4, T3
M4, T3

Regulatory Approval

FCC approval:

Date approved:

May 07, 2020
Apr 17, 2020

FCC ID value:

ZCASMA115U
ZCASMA215U

Measured SAR:

Head:

1.08 W/kg
0.42 W/kg

Body:

0.76 W/kg
1.27 W/kg

Simultaneous Transmission:

1.45 W/kg
1.27 W/kg

Wireless Router:

0.76 W/kg
1.27 W/kg

Buyers information

Price:

$ 410
$ 180
$ 250

User Manual:

This is the official Samsu​ng Galaxy A11 User Guide in English provided from the manufacturer.

In The Box:

This is the official Samsu​ng Galaxy A21 User Guide in English provided from the manufacturer.

Availability

Officially announced:

Mar 13, 2020
Apr 08, 2020
FCC OKs Cingular\'s purchase of AT&T Wireless