Samsung Galaxy M21 vs Samsung Galaxy S25 Ultra Specs Comparison

Availability

Officially announced
Mar 18, 2020	Jan 22, 2025
Prices (MSRP)
	12GB/256GB - $1299 | €1449 12GB/512GB - $1420 12GB/1TB - $1660

Design

Dimensions
6.26 x 2.96 x 0.35 inches 159.0 x 75.1 x 8.9 mm	6.41 x 3.06 x 0.32 inches (~0.36 inches with camera bump) 162.8 x 77.6 x 8.2 mm (~9.1 mm with camera bump)
Weight
6.63 oz / 188.0 g	7.69 oz / 218.0 g
Materials
Back: Plastic Frame: Plastic	Back: Glass (Corning Gorilla Glass Victus 2) Frame: Titanium
Resistance
	Water, Dust; IP68
Biometrics
2D Face unlock, Fingerprint (touch)	Ultrasonic in-screen fingerprint
Features
	Stylus
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Midnight blue, Raven black	Titanium Silverblue, Titanium Black, Titanium Whitesilver, Titanium Gray

Display

Size
6.4-inch, 84.11% screen-to-body	6.9-inch, 90.30% screen-to-body
Type
Super AMOLED, 420 nits	Dynamic AMOLED, 120Hz, HDR, 2600 nits
Resolution
2340x1080px, 19.5:9 ratio, 403 PPI	3120x1440px, 19.5:9 ratio, 498 PPI
Protection
Corning Gorilla Glass 3	Corning Gorilla Glass Armor 2
Features
Scratch-resistant glass, Proximity sensor

PhoneArena Display Test

Bright Max (20% APL)
Untested	2373 (Excellent)
Bright Min
Untested	0.8 (Excellent)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Exynos 9611 (10 nm)	Snapdragon 8 Elite for Galaxy SM8750-AB (3 nm)
Processor
Octa-core 4x2.3GHz Cortex-A73 4x1.7G​Hz Cortex-A53	Octa-core 2x4.47GHz Oryon V2 PhoenixL 6x3.53GH​z Oryon V2 PhoenixM
GPU
Mali-G72 MP3	Adreno 830
Memory
4GB (LPDDR4)/64GB 6GB/128GB	12GB (LPDDR5X)/256GB (UFS 4.0) 12GB/512GB 12GB/1024GB
Storage expansion
microSDXC up to 512 GB	not expandable
OS
Android (11, 10)	Android (15), up to 7 OS updates

PhoneArena Performance Test

GeekBench 6 Single
Untested	3137
GeekBench 6 Multi
Untested	9769
3D Mark High
Untested	6208
3D Mark Low
Untested	2981

Learn more on our PhoneArena Performance Test Results page.

Battery

Type
6000 mAh, Li - Polymer	5000 mAh, Li - Ion
Charging
Fast charging	Fast charging Qi wireless charging, Reverse wireless charging
Charge speed
	Wired: 45.0W Wireless: 15.0W

PhoneArena Battery Tests

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Battery Life Estimate

8h 0min

Browsing

20h 49min

Video

8h 54min

Gaming

14h 21min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Triple camera	Quad camera
Main camera
48 MP (PDAF) Aperture size: F2.0 Focal length: 26 mm Sensor size: 1/2" Pixel size: 0.8 μm	200 MP (OIS, Laser and PDAF) Sensor name: Samsung ISOCELL HP2 Aperture size: F1.7 Focal length: 24 mm Sensor size: 1/1.3" Pixel size: 0.6 μm
Second camera
8 MP (Ultra-wide) Aperture size: F2.2 Focal Length: 12 mm Sensor size: 1/4" Pixel size: 1.12 μm	50 MP (Ultra-wide, PDAF) Sensor name: Samsung JN3 Aperture size: F1.9 Pixel size: 0.7 μm
Third camera
5 MP (Depth information) Aperture size: F2.2	10 MP (Telephoto, OIS, PDAF) Sensor name: Sony IMX754 Optical zoom: 3.0x Aperture size: F2.4 Focal Length: 67 mm Sensor size: 1/3.52" Pixel size: 1.12 μm
Fourth camera
	50 MP (Telephoto, Periscope, OIS, PDAF) Sensor name: Sony IMX854 Optical zoom: 5.0x Aperture size: F3.4 Focal Length: 111 mm Sensor size: 1/2.52" Pixel size: 0.7 μm
Flash
LED	LED
Video recording
4K UHD (30 fps), 1080p, 720p (240 fps) EIS	8K UHD (30 fps), 4K UHD (120 fps), 1080p (240 fps) HDR, Continuous autofocus, Picture-taking during video recording
Front
20 MP (HDR) Video capture: 1080p	12 MP (PDAF, HDR) Video capture: 4K UHD (60 fps)

PhoneArena Camera Tests

N/A

Overall

N/A

Photo

N/A

Video

158

Overall

165

Photo

150

Video

Learn more on our PhoneArena Camera Test Results page

Connectivity & Features

Bluetooth
5.0	5.4
WLAN
a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac	a,b,g,n,ac,Wi-Fi 6,Wi-Fi 6E,Wi-Fi 7 Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac, ax
USB
Type-C, USB 2.0	Type-C, USB 3.2
Sensors
Accelerometer, Gyroscope, Proximity sensor	Accelerometer, Gyroscope, Compass, Barometer, Ambient light sensor, Proximity sensor
Hearing aid compatible
	M3/T4
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
	NFC, Ultra Wideband (UWB)

Multimedia

Headphones
3.5mm jack	No 3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Multiple speakers
Features
Dolby Atmos	aptX, aptX-HD
Screen mirroring
Wireless screen share
Radio
FM

Cellular

5G Bands
	n1, n2, n5, n7, n25, n28, n41, n66, n71, n77, n78, n257, n258, n260, n261, SA, NSA, Sub-6, mmWave International version - n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n38, n40, n41, n66, n75, n77, n78, SA, NSA, Sub-6
LTE Bands
1, 3, 5, 7, 8, 20	1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 66, 71 International version - 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66
TDD Bands
38, 40, 41	38, 39, 40, 41, 48 International version - 38, 39, 40, 41
3G Bands
1, 2, 5, 8	1, 2, 4, 5, 8
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s	LTE-A Pro Cat 20 (2000/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s
Dual SIM
Yes
SIM type
Nano SIM	Nano SIM, eSIM

Regulatory Approval

FCC approval
	Date approved: Nov 26, 2024 FCC ID value: A3LSMS938U
Measured SAR
	Head: 1.26 W/kg Body: 0.64 W/kg Simultaneous Transmission: 1.19 W/kg

Alternative variants

with 128GB storage

Memory	6GB/128GB

With 512GB internal storage

Memory	512GB
Prices (MSRP)	$1420

With 1TB internal storage

Memory	1024GB
Prices (MSRP)	$1660

International

5G Bands	n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n38, n40, n41, n66, n75, n77, n78, SA, NSA, Sub-6
LTE Bands	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66
TDD Bands	38, 39, 40, 41
SIM type	Dual Nano SIM + eSIM

Discover more

Full Specs Samsung Galaxy M21 Specs

Full Specs Samsung Galaxy S25 Ultra Specs PA Review Samsung Galaxy S25 Ultra Review