Samsung Galaxy S21 vs OnePlus 15 Specs Comparison

Availability

Officially announced
Jan 14, 2021	Oct 27, 2025
Prices (MSRP)
$800	12GB/256GB - $899

Design

Dimensions
5.97 x 2.80 x 0.31 inches 151.7 x 71.2 x 7.9 mm	6.35 x 3.02 x 0.32 inches 161.4 x 76.7 x 8.1 mm
Weight
6.03 oz / 171.0 g Europe version - 169 g	7.44 oz / 211.0 g
Materials
Back: Plastic Frame: Aluminum	Back: Glass Frame: Aluminum
Resistance
Water, Dust; IP68	Water, Dust; IP69
Biometrics
2D Face unlock, Ultrasonic in-screen fingerprint	Ultrasonic in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Phantom pink, Violet, Gray, White	Infinite Black, Ultra Violet, Sand Storm

Display

Size
6.2-inch, 86.06% screen-to-body	6.8-inch, 90.86% screen-to-body
Type
Dynamic AMOLED, 120Hz, HDR, 1300 nits	AMOLED, 165Hz, HDR10+, 1800 nits
Resolution
2400x1080px, 20:9 ratio, 424 PPI	2772x1272px, 19.5:9 ratio, 450 PPI
Protection
Corning Gorilla Glass Victus	Corning Gorilla Glass Victus 2

PhoneArena Display Test

Bright Max (20% APL)
Untested	3472 (Excellent)
Bright Min
1.2 (Good)	1.8 (Good)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Snapdragon 888 (5 nm) Europe version - Exynos 2100 S5E9840	Snapdragon 8 Elite Gen 5 SM8850-AC (3 nm)
Processor
Octa-core 1x2.84GHz Kryo 680 3x2.42GHz Kryo 680 4x1.80GHz Kryo 680 Europe version - Octa-core, 1x2.91GHz Cortex-X1, 3x2.81G​Hz Cortex-A78, 4x2.2G​Hz Cortex-A55	Octa-core 2x4.6GHz Oryon V3 Phoenix L 6x3.62GHz Oryon V3 Phoenix M
GPU
Adreno 660 Europe version - Mali-G78 MP14	Adreno 840
Memory
8GB (LPDDR5)/128GB (UFS 3.0) 8GB/256GB	12GB (LPDDR5X)/256GB (UFS 4.1) 16GB/256GB 12GB/512GB 16GB/512GB 16GB/1TB
Storage expansion
not expandable	not expandable
OS
Android (13, 12, 11)	Android (16)

PhoneArena Performance Test

GeekBench 6 Single
Untested	3493
GeekBench 6 Multi
Untested	10692
3D Mark High
Untested	5328
3D Mark Low
Untested	5110

Learn more on our PhoneArena Performance Test Results page.

Battery

Type
4000 mAh, Li - Polymer	7300 mAh, Si - Carbon
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
Charge speed
Wired: 25.0W Wireless: 15.0W	Wired: 80.0W Wireless: 50.0W

PhoneArena Battery Tests

Battery Life Estimate

4h 28min

Browsing

7h 47min

Video

7h 36min

Gaming

7h 9min

Battery Life Estimate

10h 44min

Browsing

30h 6min

Video

12h 37min

Gaming

14h 16min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Triple camera	Triple camera
Main camera
12 MP (OIS, PDAF) Aperture size: F1.8 Focal length: 26 mm Sensor size: 1/1.76" Pixel size: 1.8 μm	50 MP (OIS, PDAF) Aperture size: F1.8 Focal length: 24 mm Sensor size: 1/1.56" Pixel size: 1.0 μm
Second camera
12 MP (Ultra-wide, Autofocus) Aperture size: F2.2 Focal Length: 13 mm Sensor size: 1/2.55" Pixel size: 1.4 μm	50 MP (Ultra-wide) Aperture size: F2.0 Focal Length: 16 mm Sensor size: 1/2.88" Pixel size: 0.61 μm
Third camera
64 MP (Telephoto, OIS, PDAF) Aperture size: F2.0 Focal Length: 29 mm Sensor size: 1/1.7" Pixel size: 0.8 μm	50 MP (Telephoto, Periscope, OIS, PDAF) Optical zoom: 3.5x Aperture size: F2.8 Focal Length: 80 mm Sensor size: 1/2.76" Pixel size: 0.64 μm
Flash
LED	LED
Video recording
8K UHD (24 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (960 fps) OIS, HDR, Hyperlapse, Continuous autofocus, Video light, EIS	8K UHD (30 fps), 4K UHD (60 fps), 1080p (240 fps)
Front
10 MP (PDAF, HDR) Video capture: 4K UHD (60 fps)	32 MP Video capture: 4K UHD (60 fps)

PhoneArena Camera Tests

N/A

Overall

N/A

Photo

N/A

Video

151

Overall

159

Photo

143

Video

Learn more on our PhoneArena Camera Test Results page

Connectivity & Features

Bluetooth
5.0	6.0
WLAN
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 Direct, Hotspot 802.11 a, b, g, n, ac, ax
USB
Type-C, USB 3.2	Type-C, USB 3.2
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor
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
Other
NFC, ANT+	NFC

Multimedia

Headphones
No 3.5mm jack	No 3.5mm jack
Speakers
Earpiece, Multiple speakers	Earpiece, Multiple speakers
Features
32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus

Cellular

5G Bands
n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave	n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n30, n38, n40, n41, n48, n66, n71, n75, n77, n78
LTE Bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 30, 32, 71
TDD Bands
38, 39, 40, 41, 46, 48	38, 39, 40
3G Bands
1, 2, 4, 5, 8
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS	LTE-A, HSDPA+ (4G) 42.2 Mbit/s
SIM type
Nano SIM	eSIM, Dual Nano SIM

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

Discover more

Full Specs Samsung Galaxy S21 Specs PA Review Samsung Galaxy S21 Review

Full Specs OnePlus 15 Specs PA Review OnePlus 15 Review