Samsung Galaxy S21 Ultra vs Samsung Galaxy S25+ vs Samsung Galaxy S21 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.

Comparison mode:
Specs Size
Differences only
9.1
Samsung Galaxy S21 Ultra
7.5
Samsung Galaxy S25+
8.5
Samsung Galaxy S21
Samsung Galaxy S21 Ultra Samsung Galaxy S25+ Samsung Galaxy S21
Released · Jan 29, 2021
Released · Feb 07, 2025
Released · Jan 29, 2021
6.8-inch · 3200 x 1440 px
6.7-inch · 3120 x 1440 px
6.2-inch · 2400 x 1080 px
108 MP Main · 40 MP Selfie
50 MP Main · 12 MP Selfie
12 MP Main · 10 MP Selfie
12GB · 128GB
12GB · 256GB
8GB · 128GB
5000 mAh
4900 mAh
4000 mAh
Check prices Check prices Check prices

Display

Size
6.8-inch 6.7-inch 6.2-inch
Resolution
3200 x 1440 px, 20:9 ratio, 516 PPI 3120 x 1440 px, 19.5:9 ratio, 513 PPI 2400 x 1080 px, 20:9 ratio, 424 PPI
Technology
Dynamic AMOLED Dynamic AMOLED Dynamic AMOLED
Refresh rate
120Hz (adaptable) 120Hz 120Hz (adaptive)
Screen-to-body
89.33 % 92.47 % 86.06 %
Peak brightness
1500 cd/m2 (nit) 2600 cd/m2 (nit) 1300 cd/m2 (nit)
Features
HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus 2), Ambient light sensor, Proximity sensor HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 888 SM8350 (5 nm) Qualcomm Snapdragon 8 Elite SM8750-AB (3 nm) Qualcomm Snapdragon 888 (5 nm)
Processor
Octa-core, 1x 2.84GHz Kryo 680 + 3x 2.42GHz Kryo 680 + 4x 1.80GHz Kryo 680, 64-bit Octa-core, 2x 4.47GHz Oryon V2 Phoenix L + 6x 3.53GHz Oryon V2 Phoenix M Octa-core, 1x 2.84GHz Kryo 680 + 3x 2.42GHz Kryo 680 + 4x 1.80GHz Kryo 680, 64-bit
GPU
Adreno 660 Adreno 830 Adreno 660
RAM
12GB (LPDDR5) 12GB 8GB (LPDDR5)
Internal storage
128GB (UFS 3.1), not expandable 256GB (UFS 4.0), not expandable 128GB (UFS 3.0), not expandable
OS
Android (14, 13, 12, 11), One UI Android (15) Android (13, 12, 11), Samsung One UI
Device type
Smartphone Smartphone Smartphone

Battery

Capacity
5000 mAh 4900 mAh 4000 mAh
Type
Li - Polymer, Not user replaceable Li - Ion, 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 Fast charging, Qi wireless charging, Reverse wireless charging Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging, Reverse wireless charging
Max charge speed
Wired: 25.0W
Wireless: 15.0W 		Wired: 45.0W
Wireless: 15.0W 		Wired: 25.0W
Wireless: 15.0W
PhoneArena Battery Tests
Battery Life Estimate
6h 15min
Browsing
14h 43min
Video
8h 52min
Gaming
8h 40min
Battery Life Estimate
7h 36min
Browsing
19h 4min
Video
8h 56min
Gaming
13h 31min
Battery Life Estimate
4h 28min
Browsing
7h 47min
Video
7h 36min
Gaming
7h 9min
Find out more details about battery and charging for all phones we have tested on our PhoneArena Battery Score page.

Camera

Rear
Quad camera Triple camera Triple camera
Main camera
108 MP (OIS, Laser and PDAF)
Specifications:
Aperture size: F1.8
Focal length: 24 mm
Sensor size: 1/1.33"
Pixel size: 0.8 μm 		50 MP (OIS, PDAF)
Specifications:
Aperture size: F1.8
Focal length: 24 mm
Sensor size: 1/1.56"
Pixel size: 1.0 μm 		12 MP (OIS, PDAF)
Specifications:
Aperture size: F1.8
Focal length: 26 mm
Sensor size: 1/1.76"
Pixel size: 1.8 μm
Second camera
10 MP (Telephoto, Periscope, OIS, PDAF)
Specifications:
Optical zoom: 10.0x
Aperture size: F4.9
Focal Length: 240 mm
Sensor size: 1/3.2"
Pixel size: 1.22 μm 		10 MP (Telephoto)
Specifications:
Optical zoom: 3.0x
Aperture size: F2.4
Focal Length: 67 mm
Sensor size: 1/3.94"
Pixel size: 1.0 μm 		64 MP (Telephoto, OIS, PDAF)
Specifications:
Aperture size: F2.0
Focal Length: 29 mm
Sensor size: 1/1.7"
Pixel size: 0.8 μm
Third camera
10 MP (Telephoto, OIS, PDAF)
Specifications:
Optical zoom: 3.0x
Aperture size: F2.4
Focal Length: 70 mm
Sensor size: 1/3.2"
Pixel size: 1.22 μm 		12 MP (Ultra-wide)
Specifications:
Aperture size: F2.2
Focal Length: 13 mm
Sensor size: 1/2.55"
Pixel size: 1.4 μm 		12 MP (Ultra-wide, Autofocus)
Specifications:
Aperture size: F2.2
Focal Length: 13 mm
Sensor size: 1/2.55"
Pixel size: 1.4 μm
Fourth camera
12 MP (Ultra-wide, PDAF)
Specifications:
Aperture size: F2.2
Focal Length: 13 mm
Sensor size: 1/2.55"
Pixel size: 1.4 μm
Flash
LED 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, Video light, EIS 		7680x4320 (8K UHD) (30 fps), 3840x2160 (4K UHD) (120 fps), 1920x1080 (Full HD) (240 fps) 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
Front
40 MP (PDAF, HDR), Video capture: 3840x2160 (4K UHD) (60 fps) 12 MP, Video capture: 3840x2160 (4K UHD) (60 fps) 10 MP (PDAF, HDR), Video capture: 3840x2160 (4K UHD) (60 fps)
PhoneArena Camera Tests
N/A
Overall
N/A
Photo
N/A
Video
147
Overall
151
Photo
142
Video
N/A
Overall
N/A
Photo
N/A
Video
Find out more details about photo and video scores for all phones we have tested on our PhoneArena Camera Score page.

Design

Dimensions
6.50 x 2.98 x 0.35 inches
(165.1 x 75.6 x 8.9 mm)
thickness with camera 0.37 inches (9.4 mm) 		6.24 x 2.98 x 0.29 inches
(158.4 x 75.7 x 7.3 mm)
thickness with camera 0.34 inches (8.55 mm) 		5.97 x 2.80 x 0.31 inches
(151.7 x 71.2 x 7.9 mm)
Weight
8.04 oz(229.0 g) 6.70 oz(190.0 g) 6.03 oz(171.0 g)
Materials
Back: Glass (Corning Gorilla Glass Victus)
Frame: Aluminum 		Back: Glass (Corning Gorilla Glass Victus 2)
Frame: Aluminum 		Back: Plastic
Frame: Aluminum
Resistance
Water, Dust; IP68 Water, Dust; IP68 Water, Dust; IP68
Biometrics
2D Face unlock, Ultrasonic in-screen fingerprint Ultrasonic in-screen fingerprint 2D Face unlock, Ultrasonic in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key Right: Volume control, Lock/Unlock key Right: Volume control, Lock/Unlock key
Colors
Phantom black, Silver Icy Blue, Mint, Navy, Silver Shadow Phantom pink, Violet, Gray, White

Cellular

5G
Bands n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave Bands n1, n2, n5, n7, n25, n28, n41, n66, n71, n77, n78, n258, n260, n261, SA, NSA, Sub-6, mmWave, 5G Ready 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), 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), 29(700 d), 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), 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), 39(1900+), 40(2300), 41(2600+), 46, 48(3600) Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 48(3600) Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)
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) Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed
LTE-A Pro Cat 20 (2000/150 Mbit/s) LTE-A, HSDPA+ (4G) 42.2 Mbit/s LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
SIM type
Nano SIM Nano SIM, eSIM Nano SIM

Multimedia

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

Connectivity & Features

Bluetooth
5.1 5.4 5.0
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,ax(Wi-Fi 6),Wi-Fi 7,Wi-Fi 6E
Wi-Fi Direct, Hotspot 		802.11 a,b,g,n,ac,ax(Wi-Fi 6),dual-band
MIMO, Wi-Fi Direct, Hotspot
USB
Type-C (reversible), USB 3.2, Features: Charging, Headphones port, OTG, Video out Type-C (reversible), USB 3.2, Features: Charging, OTG Type-C (reversible), USB 3.2, Features: Charging, Headphones port, OTG, Video out
Hearing aid compatible
M3/T3 M3/T4 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 GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer Accelerometer, Gyroscope, Compass, Barometer Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Other
NFC, ANT+ NFC, Ultra Wideband (UWB) NFC, ANT+

Regulatory Approval

FCC approval
Date approved: Dec 22, 2020
FCC ID value: A3LSMG998U 		Date approved: Nov 26, 2024
FCC ID value: A3LSMS936U 		Date approved: Dec 08, 2020
FCC ID value: A3LSMG991U
Measured SAR
Head: 0.77 W/kg
Body: 1.02 W/kg
Simultaneous Transmission: 1.59 W/kg
Wireless Router: 1.16 W/kg
Phablet: 3.15 W/kg 		Head: 1.16 W/kg
Body: 0.81 W/kg
Simultaneous Transmission: 1.08 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
$ 1200 / € 1399 $ 999 / € 1149 $ 800
In The Box
C to C Data Cable, Ejection Pin USB-C cable, SIM ejector tool, Paperwork C to C Data Cable, Ejection Pin

Availability

Officially announced
Jan 14, 2021 Jan 14, 2021

Alternative variants

with 256GB storage
Internal storage 256GB
Colors Phantom black
MSRP $ 1250
With 512GB internal storage.
Internal storage 512GB
MSRP $ 1120
with 256GB storage
Internal storage 256GB
with 512GB storage
RAM 16GB
Internal storage 512GB
Colors Phantom black
MSRP $ 1380
International
5G Bands n1, n2, n3, n5, n7, n8, n12, n25, n28, n38, n40, n41, n66, n77, n78, SA, NSA, Sub-6
4G (FDD) Bands 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 32(1500 L-band), 66(AWS-3), 71(600)
4G (TDD) Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
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
for Europe
System chip Samsung Exynos 2100 (5 nm)
Processor Octa-core, 1x 2.91GHz Cortex-X1 + 3x 2.81GHz Cortex-A78 + 4x 2.2GHz Cortex-A55, 64-bit
GPU Mali G78 MP14
Weight 8.01 oz(227.0 g)
5G Bands SA, NSA, Sub-6
FCC approval Date approved: Dec 22, 2020
FCC ID value: A3LSMG998B
Measured SAR Head: 0.16 W/kg
Body: 0.72 W/kg
Simultaneous Transmission: 1.59 W/kg
Wireless Router: 1.34 W/kg
Phablet: 3.86 W/kg
FCC OKs Cingular\'s purchase of AT&T Wireless