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Samsung Galaxy A40 vs OPPO Find X3 Pro vs Samsung Galaxy S21

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

Comparison mode:

Display

Size:

5.9 inches
6.7 inches
6.2 inches

Resolution:

2340 x 1080 pixels, 19.5:9 ratio, 437 PPI
3216 x 1440 pixels, 20:9 ratio, 526 PPI
2400 x 1080 pixels, 20:9 ratio, 424 PPI

Technology:

Super AMOLED
AMOLED
Dynamic AMOLED

Refresh rate:

120Hz
120Hz (adaptive)

Screen-to-body:

85.73 %
89.48 %
86.06 %

Peak brightness:

1300 cd/m2 (nit)

Features:

Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor
HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor

Hardware

System chip:

Exynos 7904
Qualcomm Snapdragon 888
Qualcomm Snapdragon 888

Processor:

Octa-core, 1800 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm
Octa-core, 2840 MHz, Kryo 680, 64-bit, 5 nm
Octa-core, 2840 MHz, Kryo 680, 64-bit, 5 nm

GPU:

Mali-G71 MP2
Adreno 660
Adreno 660

RAM:

4GB LPDDR4
12GB LPDDR5
8GB LPDDR5

Internal storage:

64GB, available to use: 49.4 GB
256GB (UFS 3.1), not expandable
128GB (UFS 3.0), not expandable

Storage expansion:

microSDXC up to 512 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

Android (11, 10, 9.0 Pie), Samsung One UI
Android (11), ColorOS 11.2 UI
Android (11), Samsung One UI

Battery

Capacity:

3100 mAh
4500 mAh
4000 mAh

Type:

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

Charging:

Samsung Adaptive Fast Charging
SuperVOOC 2.0, Qi wireless charging, Reverse wireless charging
Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging, Reverse wireless charging

Max charge speed:

Wired: 65.0W; Wireless: 30.0W
Wired: 25.0W; Wireless: 15.0W

Camera

Rear:

Dual camera
Quad camera
Triple camera

Main camera:

16 MP (PDAF)
50 MP (OIS, PDAF)
12 MP (OIS, PDAF)

Specifications:

Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.8"; Pixel size: 1.12 μm
Aperture size: F1.8; Sensor size: 1/1.56"
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/1.76"; Pixel size: 1.8 μm

Second camera:

5 MP (Ultra-wide)
13 MP (Telephoto)
64 MP (Telephoto, OIS, PDAF)

Specifications:

Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
Optical zoom: 5.0x; Aperture size: F2.4
Aperture size: F2.0; Focal Length: 29 mm; Sensor size: 1/1.7"; Pixel size: 0.8 μm

Third camera:

50 MP (Ultra-wide)
12 MP (Ultra-wide, Autofocus)

Specifications:

Aperture size: F2.2; Sensor size: 1/1.56"
Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm

Fourth camera:

3 MP (Macro)

Specifications:

Optical zoom: 60.0x; Aperture size: F3.0

Video recording:

1920x1080 (Full HD) (30 fps)
3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD)
7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)

Features:

Hyperlapse, Video calling, Video sharing
OIS, HDR, Continuous autofocus, Video light, EIS
OIS, HDR, Hyperlapse, Continuous autofocus, Video light, EIS

Front:

25 MP
32 MP
10 MP (PDAF, HDR)

Video capture:

1920x1080 (Full HD)
3840x2160 (4K UHD) (60 fps)

Design

Dimensions:

5.69 x 2.72 x 0.31 inches (144.4 x 69.2 x 7.9 mm)
6.43 x 2.91 x 0.33 inches (163.4 x 74 x 8.26 mm)
5.97 x 2.80 x 0.31 inches (151.7 x 71.2 x 7.9 mm)

Weight:

4.94 oz (140.0 g)
6.81 oz (193.0 g)
6.03 oz (171.0 g)

Materials:

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

Resistance:

Water, Splash, Dust; IP68
Water, Dust; IP68

Biometrics:

2D Face unlock, Fingerprint (touch)
2D Face unlock, In-screen fingerprint
2D Face unlock, Ultrasonic in-screen fingerprint

Keys:

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

Colors:

Black, Coral, Blue, White
Gloss Black, Blue
Phantom pink, Violet, Gray, White

Cellular

5G:

n1, n3, n5, n7, n8, n20, n28, n38, n40, n41, n77, n78, n79
n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave

LTE (FDD):

Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD)
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), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 32(1500 L-band), 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), 14(700 PS), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 30(2300 WCS), 66(AWS-3), 71(600)

LTE (TDD):

Bands 38(2600), 40(2300), 41(2600+)
Bands 34(2000), 38(2600), 39(1900+), 40(2300), 41(2600+), 42(3500)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)

UMTS:

Bands 1(2100), 2(1900), 5(850), 8(900)
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 6(800), 8(900), 19(800)
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)

Data Speed:

LTE-A Cat 12/13 (600/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS

Dual SIM:

Yes
Yes

SIM type:

Nano SIM
Nano SIM
Nano SIM

Multimedia

Headphones:

3.5mm jack
No 3.5mm jack
No 3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Loudspeaker
Earpiece, Multiple speakers

Features:

Dolby Atmos, Album art cover, Background playback
Dolby Atmos
32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM
FM, Stereo, RDS

Additional microphone(s):

for Noise cancellation
for Noise cancellation
for Noise cancellation, Video recording

Connectivity & Features

Bluetooth:

5.0
5.2
5.0

Wi-Fi:

802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ax (Wi-Fi 6), tri-band; Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, ax (Wi-Fi 6), dual-band; MIMO, Wi-Fi Direct, Hotspot

USB:

Type-C (reversible), USB 2.0
Type-C (reversible), USB 3.1
Type-C (reversible), USB 3.2

Features:

Charging, Mass storage device
Charging, Headphones port, Mass storage device
Charging, Headphones port, OTG, Video out

Location:

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

Sensors:

Accelerometer, Gyroscope, Compass, Hall (for flip covers)
Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer

Other:

NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync
NFC
NFC, ANT+

Hearing aid compatible:

M3, T3

Regulatory Approval

FCC approval:

Date approved:

Mar 08, 2019
Jan 20, 2021
Dec 08, 2020

FCC ID value:

A3LSMA405FN
R9C-CPH2173
A3LSMG991U

Measured SAR:

Head:

0.51 W/kg
1.17 W/kg
0.36 W/kg

Body:

0.46 W/kg
0.47 W/kg
1.08 W/kg

Simultaneous Transmission:

1.02 W/kg
1.59 W/kg
3.96 W/kg

Wireless Router:

0.61 W/kg
1.05 W/kg
1.09 W/kg

Phablet:

2.49 W/kg

Buyers information

Price:

$ 800

In The Box:

C to C Data Cable, Ejection Pin

Availability

Officially announced:

Apr 10, 2019
Mar 11, 2021
Jan 14, 2021
FCC OKs Cingular\'s purchase of AT&T Wireless