Microsoft Surface Duo 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.

8.5
Samsung Galaxy S21+
Microsoft Surface Duo Samsung Galaxy S21+
Released · Sep 10, 2020
Released · Jan 29, 2021
8.1-inch · 2700x1800px
6.7-inch · 2400x1080px
Single camera
Triple camera
6GB · 128GB
8GB · 128GB
3577 mAh
4800 mAh
Check prices

Design

Dimensions
7.36 x 5.72 x 0.19 inches
186.9 x 145.2 x 4.8 mm
6.35 x 2.98 x 0.31 inches
161.5 x 75.6 x 7.8 mm
Folded
(145.2 x 93.3 x 9.9 mm)
Weight
8.82 oz (250.0 g) 7.13 oz (202.0 g)
Materials
Back: Glass (Corning Gorilla Glass 5) Back: Glass (Corning Gorilla Glass Victus)
Frame: Aluminum
Resistance
Water, Dust; IP68
Biometrics
Fingerprint (touch) 2D Face unlock, Ultrasonic in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key Right: Volume control, Lock/Unlock key
Colors
Glacier Phantom silver, Black, Violet

Display

Size
8.1-inch 6.7-inch
Resolution
2700x1800px, 3:2 ratio, 401 PPI 2400x1080px, 20:9 ratio, 393 PPI
Technology
AMOLED Dynamic AMOLED
Refresh rate
120Hz (adaptive)
Screen-to-body
71.93 % 88.63 %
Peak brightness
1300 cd/m2 (nit)
Features
360° folding, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor
Front cover display
5.6 inches
1800 x1350 px
AMOLED
Scratch-resistant glass (Corning Gorilla Glass 5), Part of the main display
Rear cover display
5.6 inches
1350 x1800 px
AMOLED
Scratch-resistant glass (Corning Gorilla Glass 5), Part of the main display

Hardware

System chip
Qualcomm Snapdragon 855 SM8150 (7 nm) Qualcomm Snapdragon 888 (5 nm)
Processor
Octa-core
2840 MHz
Kryo 485
Octa-core
1x2.84GHz Kryo 680
3x2.42GHz Kryo 680
4x1.80GHz Kryo 680
GPU
Adreno 640 Adreno 660
RAM
6GB (LPDDR4) 8GB (LPDDR5)
Internal storage
128GB (UFS 3.0) 128GB (UFS 3.0)
Storage expansion
not expandable not expandable
OS
Android (10) Android (13, 12, 11), Samsung One UI

Battery

Capacity
3577 mAh 4800 mAh
Type
Li - Polymer
Charging
Fast charging Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging, Reverse wireless charging
Charge speed
Wired: 18.0W Wired: 25.0W
Wireless: 15.0W
PhoneArena Battery Tests
Battery Life Estimate
Untested
Browsing
Untested
Video
Untested
Gaming
Untested
Battery Life Estimate
5h 26min
Browsing
10h 50min
Video
8h 27min
Gaming
8h 36min

Camera

Rear
Single camera, Doubles as a selfie camera Triple camera
Main camera
11 MP (PDAF)
Aperture size: F2.0
12 MP (OIS, PDAF)
Aperture size: F1.8
Focal length: 26 mm
Sensor size: 1/1.76"
Pixel size: 1.8 μm
Second camera
12 MP (Ultra-wide, PDAF)
Aperture size: F1.8
Focal Length: 13 mm
Sensor size: 1/2.55"
Pixel size: 1.4 μm
Third camera
64 MP (Telephoto, OIS, PDAF)
Aperture size: F2.0
Focal Length: 29 mm
Sensor size: 1/2.55"
Pixel size: 0.8 μm
Flash
LED LED
Video recording
3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (60 fps)
EIS
7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)
OIS, HDR, Hyperlapse, Video light, EIS
Front
10 MP (PDAF, HDR), Video capture: 3840x2160 (4K UHD) (60 fps)

Connectivity & Features

Bluetooth
5.0 5.0
WLAN
802.11 a,b,g,n,ac,dual-band
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, USB 3.1 Type-C, USB 3.2
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), Heart rate Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Other
NFC, ANT+

Multimedia

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

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), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3) 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 Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)
3G
Bands 1(2100), 2(1900), 5(850), 8(900) Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed
LTE-A Pro Cat 18 (1200/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
Dual SIM
Yes
SIM type
Nano SIM, eSIM Nano SIM

Regulatory Approval

FCC approval
Date approved: Dec 18, 2020
FCC ID value: A3LSMG996U
Measured SAR
Head: 0.65 W/kg
Body: 0.95 W/kg
Simultaneous Transmission: 1.59 W/kg
Wireless Router: 1.04 W/kg
Phablet: 3.97 W/kg

Buyers information

MSRP
$ 1399 $ 1000
In The Box
Bumper (Color: Glacier), Power Supply (18w), Quick Start Guide, Warranty and Compliance Guide, SIM Ejector tool C to C Data Cable, Ejection Pin

Availability

Officially announced
Aug 12, 2020 Jan 14, 2021

Alternative variants

with 256GB storage
Internal storage 256GB
MSRP $ 1500
with 256GB storage
Internal storage 256GB
MSRP $ 1050
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
GPU Mali G78 MP14
Weight 7.05 oz (200.0 g)
5G Bands SA, NSA, Sub-6
FCC approval Date approved: Dec 18, 2020
FCC ID value: A3LSMG996B
Measured SAR Head: 0.24 W/kg
Body: 0.75 W/kg
Simultaneous Transmission: 3.59 W/kg
Wireless Router: 1.26 W/kg
Phablet: 1.95 W/kg
FCC OKs Cingular\'s purchase of AT&T Wireless