Samsung Galaxy A7 (2018) vs Samsung Galaxy S21 Specs Comparison

Design

Dimensions
6.29 x 3.02 x 0.30 inches 159.8 x 76.8 x 7.5 mm	5.97 x 2.80 x 0.31 inches 151.7 x 71.2 x 7.9 mm
Weight
5.93 oz (168.0 g)	6.03 oz (171.0 g)
Materials
Back: Glass (Corning Gorilla Glass 3) Frame: Plastic	Back: Plastic Frame: Aluminum
Resistance
	Water, Dust; IP68
Biometrics
Fingerprint (touch)	2D Face unlock, Ultrasonic in-screen fingerprint
Features
Notification light
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Black, Gold, Pink, Blue	Phantom pink, Violet, Gray, White

Display

Size
6.0-inch	6.2-inch
Resolution
2220x1080px, 18.5:9 ratio, 411 PPI	2400x1080px, 20:9 ratio, 424 PPI
Technology
Super AMOLED	Dynamic AMOLED
Refresh rate
	120Hz (adaptive)
Screen-to-body
74.55 %	86.06 %
Colors
16 777 216
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 Victus), Ambient light sensor, Proximity sensor

Hardware

System chip
Samsung Exynos 7 Octa 7885 (14 nm)	Qualcomm Snapdragon 888 (5 nm)
Processor
Octa-core 2200 MHz ARM Cortex-A73 and ARM Cortex-A53	Octa-core 1x 2.84GHz Kryo 680 + 3x 2.42GHz Kryo 680 + 4x 1.80GHz Kryo 680
GPU
Mali-G71 MP2	Adreno 660
RAM
6GB (LPDDR4)	8GB (LPDDR5)
Internal storage
128GB	128GB (UFS 3.0)
Storage expansion
microSDXC up to 512 GB	not expandable
OS
Android (9.0 Pie, 8.0 Oreo), Samsung One UI	Android (13, 12, 11), Samsung One UI

Battery

Capacity
3300 mAh	4000 mAh
Type
	Li - Polymer
Charging
	Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging, Reverse wireless charging
Charge speed
	Wired: 25.0W Wireless: 15.0W

PhoneArena Battery Tests

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Battery Life Estimate

4h 28min

Browsing

7h 47min

Video

7h 36min

Gaming

7h 9min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Triple camera	Triple camera
Main camera
24 MP (PDAF, CMOS image sensor) Aperture size: F1.7 Focal length: 26 mm Sensor size: 1/2.8" Pixel size: 0.9 μm	12 MP (OIS, PDAF) Aperture size: F1.8 Focal length: 26 mm Sensor size: 1/1.76" Pixel size: 1.8 μm
Second camera
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	12 MP (Ultra-wide, Autofocus) Aperture size: F2.2 Focal Length: 13 mm Sensor size: 1/2.55" Pixel size: 1.4 μm
Third camera
5 MP (Depth information) Aperture size: F2.2 Focal Length: 24 mm Sensor size: 1/5" Pixel size: 1.12 μm	64 MP (Telephoto, OIS, PDAF) Aperture size: F2.0 Focal Length: 29 mm Sensor size: 1/1.7" Pixel size: 0.8 μm
Flash
LED	LED
Video recording
1920x1080 (Full HD) (30 fps) Hyperlapse, EIS, Video calling, Video sharing	7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps) OIS, HDR, Hyperlapse, Continuous autofocus, Video light, EIS
Front
24 MP (Flash), Video capture: 1920x1080 (Full HD)	10 MP (PDAF, HDR), Video capture: 3840x2160 (4K UHD) (60 fps)

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
802.11 a,b,g,n,ac,dual-band Hotspot, Wi-Fi Direct	802.11 a,b,g,n,ac,ax(Wi-Fi 6),dual-band MIMO, Wi-Fi Direct, Hotspot
USB
microUSB, USB 2.0	Type-C, USB 3.2
Hearing aid compatible
	M3/T3
Location
GPS, A-GPS, Glonass, BeiDou	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers)	Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Other
NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync	NFC, ANT+

Multimedia

Headphones
3.5mm jack	No 3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Multiple speakers
Features
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
Radio
FM	FM, Stereo, RDS
Additional microphone(s)
	Noise cancellation, Video recording

Cellular

5G
	Bands n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave
4G (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), 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)
4G (TDD)
Bands 38(2600), 40(2300), 41(2600+)	Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)
3G
Bands 5(850), 8(900), 2(1900), 1(2100)	Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed
LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA	LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
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	Date approved: Dec 08, 2020 FCC ID value: A3LSMG991U
Measured SAR
Head: 0.50 W/kg Body: 0.39 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.05 W/kg	Head: 0.36 W/kg Body: 1.08 W/kg Simultaneous Transmission: 3.96 W/kg Wireless Router: 1.09 W/kg Phablet: 2.49 W/kg

Buyers information

MSRP
	$ 800
In The Box
Charger, microUSB cable, Headphones, SIM Removal Tool, Documentation	C to C Data Cable, Ejection Pin

Availability

Officially announced
Sep 20, 2018	Jan 14, 2021

Alternative variants

with 4 GB RAM

RAM	4GB

with 256GB storage

Internal storage	256GB

with 64 GB storage

RAM	4GB
Internal storage	64GB

for Europe

System chip	Samsung Exynos 2100 (5 nm)
Processor	Octa-core 2900 MHz 1x 2.91GHz Cortex-X1 + 3x 2.81GHz Cortex-A78 + 4x 2.2GHz Cortex-A55
GPU	Mali G78 MP14
Weight	5.96 oz (169.0 g)
5G	Bands SA, NSA, Sub-6
FCC approval	Date approved: Dec 18, 2020 FCC ID value: A3LSMG991B
Measured SAR	Head: 0.42 W/kg Body: 0.94 W/kg Simultaneous Transmission: 3.96 W/kg Wireless Router: 1.34 W/kg Phablet: 2.37 W/kg

Dual SIM support

Dual SIM	Yes

Links

Full specifications
Samsung Galaxy A7 (2018) Specs	Samsung Galaxy S21 Specs
PhoneArena Review
Samsung Galaxy A7 (2018) Review	Samsung Galaxy S21 Review
User Reviews
	Samsung Galaxy S21 User Reviews