Samsung Galaxy M40 vs Samsung Galaxy A51

$299.90 VIEW ON eBay
$299.91 VIEW ON eBay

Display

Size

6.3 inches
6.5 inches

Resolution

1080 x 2340 pixels, 19.5:9 ratio,
409 PPI
1080 x 2400 pixels, 20:9 ratio,
405 PPI

Technology

IPS LCD
Super AMOLED

Screen-to-body

84.94 %
87.37 %

Features

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

Hardware & Performance

System chip

Qualcomm Snapdragon 675 SM6150
Samsung Exynos 9611

Processor

Octa-core, 2000 MHz, Kryo 460, 64-bit, 11 nm
Octa-core, 2300 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm

GPU

Adreno 612
Mali-G72 MP3

RAM

6GB
4GB

Internal storage

128GB
128GB

Storage expansion

microSDXC up to 512 GB
microSDXC up to 512 GB

OS

Android (9.0 Pie), Samsung One UI
Android (10), Samsung One UI

Battery

Capacity

3500 mAh
4000 mAh

Type

Not user replaceable
Li - Polymer, Not user replaceable

Charging

Samsung Adaptive Fast Charging
Fast charging

Camera

Rear

Triple camera
Quad camera

Main camera

32 megapixels
48 megapixels

Features

Phase-detection autofocus
Phase-detection autofocus

Second camera

8 megapixels
12 megapixels

Features

Ultra-wide, Phase-detection autofocus
Ultra-wide

Third camera

5 megapixels
5 megapixels

Features

Depth information
Macro

Fourth camera

 
5 megapixels

Features

 
Depth information

Video recording

3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (30 fps), 1280x720 (HD) (240 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)

Features

Hyperlapse, Video calling, Video sharing
Hyperlapse, Digital image stabilization

Front

16 megapixels
32 megapixels

Features

High Dynamic Range mode (HDR)
High Dynamic Range mode (HDR)

Design

Dimensions

6.11 x 2.91 x 0.31 inches (155.3 x 73.9 x 7.9 mm)
6.24 x 2.90 x 0.31 inches (158.5 x 73.6 x 7.9 mm)

Weight

5.93 oz (168 g)
the average is 6.2 oz (176 g)
6.07 oz (172 g)
the average is 6.2 oz (176 g)

Materials

Back: Plastic
Back: Plastic

Biometrics

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

Colors

Midnight blue, Seawater blue
Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue

Cellular

LTE (FDD)

Bands 1(2100), 3(1800), 5(850), 8(900)
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), 26(850+), 28(700 APT), 66(AWS-3)

LTE (TDD)

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

UMTS

850, 900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz

Data Speed

LTE-A Cat 13/5 (400/75 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

Dual SIM

Yes
Yes

SIM type

Nano SIM
Nano SIM

Multimedia

Headphones

No 3.5mm jack
3.5mm jack

Features

Album art cover, Background playback, Dolby Atmos
Dolby Atmos

Connectivity & Features

Bluetooth

5.0
5.0

Wi-Fi

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

USB

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

Features

Mass storage device, Charging, Headphones port
Charging, OTG

Sensors

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

Other

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

Phone features

Notifications

Haptic feedback, Music ringtones, Vibration
 

Other features

Voice dialing, Voice commands, Voice recording
 

Shopping information

In The Box

Type-C earphones, Data cable, 15W charger, User manual, Ejection pin
 
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