Samsung Galaxy M21 vs Samsung Galaxy A7 (2018) Specs Comparison

Availability

Officially announced
Mar 18, 2020	Sep 20, 2018

Design

Dimensions
6.26 x 2.96 x 0.35 inches 159.0 x 75.1 x 8.9 mm	6.29 x 3.02 x 0.30 inches 159.8 x 76.8 x 7.5 mm
Weight
6.63 oz / 188.0 g	5.93 oz / 168.0 g
Materials
Back: Plastic Frame: Plastic	Back: Glass (Corning Gorilla Glass 3) Frame: Plastic
Biometrics
2D Face unlock, Fingerprint (touch)	Fingerprint (touch)
Features
	Notification light
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Midnight blue, Raven black	Black, Gold, Pink, Blue

Display

Size
6.4-inch, 84.11% screen-to-body	6.0-inch, 74.55% screen-to-body
Type
Super AMOLED, 420 nits	Super AMOLED
Resolution
2340x1080px, 19.5:9 ratio, 403 PPI	2220x1080px, 18.5:9 ratio, 411 PPI
Colors
	16 777 216
Protection
Corning Gorilla Glass 3	Corning Gorilla Glass 3
Features
Scratch-resistant glass, Proximity sensor

PhoneArena Display Test

Bright Max (20% APL)
Untested	Untested
Bright Min
Untested	1.8 (Good)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Exynos 9611 (10 nm)	Samsung Exynos 7 Octa 7885 (14 nm)
Processor
Octa-core 4x2.3GHz Cortex-A73 4x1.7G​Hz Cortex-A53	Octa-core 2200 MHz ARM Cortex-A73 and ARM Cortex-A53
GPU
Mali-G72 MP3	Mali-G71 MP2
Memory
4GB (LPDDR4)/64GB 6GB/128GB	6GB (LPDDR4)/128GB 4GB/64GB 4GB/128GB
Storage expansion
microSDXC up to 512 GB	microSDXC up to 512 GB
OS
Android (11, 10)	Android (9.0 Pie, 8.0 Oreo)

Battery

Type
6000 mAh, Li - Polymer	3300 mAh
Charging
Fast charging

Camera

Rear
Triple camera	Triple camera
Main camera
48 MP (PDAF) Aperture size: F2.0 Focal length: 26 mm Sensor size: 1/2" Pixel size: 0.8 μm	24 MP (PDAF, CMOS image sensor) Aperture size: F1.7 Focal length: 26 mm Sensor size: 1/2.8" Pixel size: 0.9 μm
Second camera
8 MP (Ultra-wide) Aperture size: F2.2 Focal Length: 12 mm Sensor size: 1/4" Pixel size: 1.12 μm	8 MP (Ultra-wide, Autofocus, CMOS image sensor, BSI sensor) Aperture size: F2.4 Focal Length: 18 mm Sensor size: 1/4" Pixel size: 1.12 μm
Third camera
5 MP (Depth information) Aperture size: F2.2	5 MP (Depth information) Aperture size: F2.2 Focal Length: 24 mm Sensor size: 1/5" Pixel size: 1.12 μm
Flash
LED	LED
Video recording
4K UHD (30 fps), 1080p, 720p (240 fps) EIS	1080p (30 fps) Hyperlapse, EIS, Video calling, Video sharing
Front
20 MP (HDR) Video capture: 1080p	24 MP (Flash) Video capture: 1080p

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac	a,b,g,n,ac,dual-band Hotspot, Wi-Fi Direct 802.11 a, b, g, n, ac
USB
Type-C, USB 2.0	microUSB, USB 2.0
Sensors
Accelerometer, Gyroscope, Proximity sensor	Accelerometer, Gyroscope, Compass, Hall (for flip covers), Ambient light sensor, Proximity sensor
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, BeiDou
Other
	NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Loudspeaker
Features
Dolby Atmos	Album art cover, Background playback, Dolby Atmos
Screen mirroring
Wireless screen share	Wireless screen share
Radio
FM	FM

Cellular

4G (FDD) Bands
1, 3, 5, 7, 8, 20	1, 3, 5, 7, 8, 20
4G (TDD) Bands
38, 40, 41	38, 40, 41
3G Bands
1, 2, 5, 8	5, 8, 2, 1
Data Speed
LTE-A, 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
Dual SIM
Yes
SIM type
Nano SIM	Nano SIM
VoLTE
	Yes

Phone Features

Notifications
	Haptic feedback, Music ringtones, Vibration
Other features
	Voice dialing, Voice commands, Voice recording

Regulatory Approval

FCC approval
	Date approved: Sep 13, 2018 FCC ID value: A3LSMA750FN
Measured SAR
	Head: 0.50 W/kg Body: 0.39 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.05 W/kg

Alternative variants

with 128GB storage

Memory	6GB/128GB

with 4 GB RAM

Memory	4GB

with 64 GB storage

Memory	4GB/64GB

Dual SIM support

Dual SIM	Yes

Discover more

Full Specs Samsung Galaxy M21 Specs

Full Specs Samsung Galaxy A7 (2018) Specs PA Review Samsung Galaxy A7 (2018) Review