Samsung Galaxy S21 vs Samsung Galaxy A15 5G Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

8.5	5.1
Samsung Galaxy S21	Samsung Galaxy A15 5G
Released · Jan 29, 2021	Released · Dec 16, 2023
6.2-inch · 2400 x 1080 px	6.5-inch · 2340 x 1080 px
12 MP Main · 10 MP Selfie	50 MP Main · 13 MP Selfie
8GB · 128GB	4GB · 128GB
4000 mAh	5000 mAh
Check prices	Check prices

Display

Size
6.2-inch	6.5-inch
Resolution
2400 x 1080 px, 20:9 ratio, 424 PPI	2340 x 1080 px, 19.5:9 ratio, 396 PPI
Technology
Dynamic AMOLED	Super AMOLED
Refresh rate
120Hz (adaptive)	90Hz
Screen-to-body
86.06 %	84.49 %
Peak brightness
1300 cd/m2 (nit)	800 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 Dimensity 6100+ (6 nm)
Processor
Octa-core, 1x 2.84GHz Kryo 680 + 3x 2.42GHz Kryo 680 + 4x 1.80GHz Kryo 680, 64-bit	Octa-core, 2x2.2GHz Cortex-A76 + 6x2.0GHz Cortex-A55, 64-bit
GPU
Adreno 660	Mali-G57 MC2
RAM
8GB (LPDDR5)	4GB
Internal storage
128GB (UFS 3.0), not expandable	128GB
Storage expansion
	microSDXC up to 1000 GB
OS
Android (13, 12, 11), Samsung One UI	Android (14), One UI 16 UI
Device type
Smartphone	Smartphone

Battery

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

Battery Life Estimate

4h 28min

Browsing

7h 47min

Video

7h 36min

Gaming

7h 9min

Battery Life Estimate

6h 43min

Browsing

10h 41min

Video

12h 15min

Gaming

10h 19min

Camera

Rear
Triple camera	Triple 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	50 MP (Autofocus) Specifications: Aperture size: F1.8
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
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)	13 MP, Video capture: 1920x1080 (Full HD)

N/A

Overall

N/A

Photo

N/A

Video

122

Overall

136

Photo

107

Video

Design

Dimensions
5.97 x 2.80 x 0.31 inches (151.7 x 71.2 x 7.9 mm)	6.30 x 3.02 x 0.33 inches (160.1 x 76.8 x 8.4 mm)
Weight
6.03 oz(171.0 g)	7.05 oz(200.0 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	Blue Black, Light Blue

Cellular

5G
Bands n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave	Bands n1, n3, n5, n7, n8, n28, n40, n41, n66, n71, n77, n78, SA, NSA, Sub-6
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), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 17(700 b), 20(800 DD), 26(850+), 28(700 APT), 66(AWS-3)
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), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS	LTE-A
Dual SIM
	Yes
SIM type
Nano SIM	Dual Nano SIM
HD Voice
	Yes
VoLTE
	Yes

Multimedia

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

Connectivity & Features

Bluetooth
5.0	5.3
Wi-Fi
802.11 a,b,g,n,ac,ax(Wi-Fi 6),dual-band MIMO, Wi-Fi Direct, Hotspot	802.11 a,b,g,n,ac,dual-band 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
Hearing aid compatible
M3/T3
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer	Accelerometer, Gyroscope, Compass
Other
NFC, ANT+	NFC

Regulatory Approval

FCC approval
Date approved: Dec 08, 2020 FCC ID value: A3LSMG991U
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

Buyers information

MSRP
$ 800	$ 200
In The Box
C to C Data Cable, Ejection Pin	Phone, USB Type-C cabel, SIM ejector tool, Papers

Availability

Officially announced
Jan 14, 2021	Dec 11, 2023

Alternative variants

with 256GB storage


Internal storage	256GB

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

Links

Full specifications
Samsung Galaxy S21 Specs	Samsung Galaxy A15 5G Specs
PhoneArena Review
Samsung Galaxy S21 Review	Samsung Galaxy A15 5G Review
User Reviews
Samsung Galaxy S21 User Reviews	Samsung Galaxy A15 5G User Reviews