Samsung Galaxy S21 vs Samsung Galaxy A12 Specs Comparison

Display

Size
6.2-inch	6.5-inch
Resolution
2400 x 1080 px, 20:9 ratio, 424 PPI	1600 x 720 px, 20:9 ratio, 270 PPI
Technology
Dynamic AMOLED	LCD
Refresh rate
120Hz (adaptive)
Screen-to-body
86.06 %	85.80 %
Peak brightness
1300 cd/m2 (nit)
Features
HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor	Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 888 (5 nm)	Mediatek Helio P35 MT6765 (12 nm)
Processor
Octa-core, 1x 2.84GHz Kryo 680 + 3x 2.42GHz Kryo 680 + 4x 1.80GHz Kryo 680, 64-bit	Octa-core, 4x 2.3GHz Cortex-A53 + 4x 1.8GHz Cortex-A53, 64-bit
GPU
Adreno 660	PowerVR GE8320
RAM
8GB (LPDDR5)	4GB (LPDDR4)
Internal storage
128GB (UFS 3.0), not expandable	64GB (eMMC 5.1), available to use: 48.2 GB
Storage expansion
	microSDXC up to 1024 GB
OS
Android (13, 12, 11), Samsung One UI	Android (10), Samsung One UI UI
Device type
Smartphone	Smartphone

Battery

Capacity
4000 mAh	5000 mAh
Type
Li - Polymer, Not user replaceable	Li - Polymer, Not user replaceable
Charging
Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging, Reverse wireless charging	Samsung Adaptive Fast Charging
Max charge speed
Wired: 25.0W Wireless: 15.0W	Wired: 15.0W

PhoneArena Battery Tests

Battery Life Estimate

4h 28min

Browsing

7h 47min

Video

7h 36min

Gaming

7h 9min

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Find out more details about battery and charging for all phones we have tested on our PhoneArena Battery Score page.

Camera

Rear
Triple camera	Quad camera
Main camera
12 MP (OIS, PDAF) Specifications: Aperture size: F1.8 Focal length: 26 mm Sensor size: 1/1.76" Pixel size: 1.8 μm	48 MP (Autofocus) Specifications: Aperture size: F2.0 Focal length: 26 mm
Second camera
64 MP (Telephoto, OIS, PDAF) Specifications: Aperture size: F2.0 Focal Length: 29 mm Sensor size: 1/1.7" Pixel size: 0.8 μm	5 MP (Ultra-wide) Specifications: Aperture size: F2.2
Third camera
12 MP (Ultra-wide, Autofocus) Specifications: Aperture size: F2.2 Focal Length: 13 mm Sensor size: 1/2.55" Pixel size: 1.4 μm	2 MP (Macro) Specifications: Aperture size: F2.4
Fourth camera
	2 MP (Depth information) Specifications: Aperture size: F2.4
Flash
LED	LED
Video recording
7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps) Features: OIS, HDR, Hyperlapse, Continuous autofocus, Video light, EIS	1920x1080 (Full HD) (30 fps)
Front
10 MP (PDAF, HDR), Video capture: 3840x2160 (4K UHD) (60 fps)	8 MP

Design

Dimensions
5.97 x 2.80 x 0.31 inches (151.7 x 71.2 x 7.9 mm)	6.46 x 2.98 x 0.35 inches (164 x 75.8 x 8.9 mm)
Weight
6.03 oz(171.0 g)	7.23 oz(205.0 g)
Materials
Back: Plastic Frame: Aluminum	Back: Plastic Frame: Plastic
Resistance
Water, Dust; IP68
Biometrics
2D Face unlock, Ultrasonic in-screen fingerprint	Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Phantom pink, Violet, Gray, White	Black, White, Blue, Red

Cellular

5G
Bands n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave
4G (FDD)
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)	Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)
4G (TDD)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)	Bands 38(2600), 40(2300), 41(2600+)
3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)	Bands 1(2100), 5(850), 8(900)
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS	LTE, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
	No
SIM type
Nano SIM	Nano SIM

Multimedia

Headphones
No 3.5mm jack	3.5mm jack
Speakers
Earpiece, Multiple speakers	Earpiece, Loudspeaker
Features
32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus
Screen mirroring
Wireless screen share	Wireless screen share,MirrorLink
Radio
FM, Stereo, RDS
Additional microphone(s)
Noise cancellation, Video recording

Connectivity & Features

Bluetooth
5.0	5.0
Wi-Fi
802.11 a,b,g,n,ac,ax(Wi-Fi 6),dual-band MIMO, Wi-Fi Direct, Hotspot	802.11 b,g,n Wi-Fi Direct, Hotspot
USB
Type-C (reversible), USB 3.2, Features: Charging, Headphones port, OTG, Video out	Type-C (reversible), USB 2.0, Features: Charging, Mass storage device
Hearing aid compatible
M3/T3
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer	Accelerometer
Other
NFC, ANT+	NFC

Regulatory Approval

FCC approval
Date approved: Dec 08, 2020 FCC ID value: A3LSMG991U	Date approved: Mar 11, 2021 FCC ID value: A3LSMA125U
Measured SAR
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	Head: 1.14 W/kg Body: 1.20 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.34 W/kg

Buyers information

MSRP
$ 800	€ 179
In The Box
C to C Data Cable, Ejection Pin	Power brick, USB cable, Headphones, Sim card extraction tool

Availability

Officially announced
Jan 14, 2021	Nov 24, 2020

Alternative variants

with 256GB storage

Internal storage	256GB

With 32GB storage

RAM	3GB
Internal storage	32GB

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, 64-bit
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

With 128GB storage

RAM	6GB
Internal storage	128GB

Links

Full specifications
Samsung Galaxy S21 Specs	Samsung Galaxy A12 Specs
PhoneArena Review
Samsung Galaxy S21 Review
User Reviews
Samsung Galaxy S21 User Reviews