Xiaomi Mi 11 Ultra 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
Xiaomi Mi 11 Ultra
8.5
Samsung Galaxy S21
Xiaomi Mi 11 Ultra Samsung Galaxy S21
Released · Apr 02, 2021
Released · Jan 29, 2021
6.8-inch · 3200x1440px
6.2-inch · 2400x1080px
Triple camera
Triple camera
8GB · 256GB
8GB · 128GB
5000 mAh
4000 mAh
Check prices

Design

Dimensions
6.47 x 2.94 x 0.33 inches
164.3 x 74.6 x 8.38 mm
5.97 x 2.80 x 0.31 inches
151.7 x 71.2 x 7.9 mm
Weight
8.25 oz (234.0 g) 6.03 oz (171.0 g)
Materials
Back: Ceramic Back: Plastic
Frame: Aluminum
Resistance
Water, Dust; IP68 Water, Dust; IP68
Biometrics
2D Face unlock, Optical in-screen fingerprint 2D Face unlock, Ultrasonic in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key Right: Volume control, Lock/Unlock key
Colors
Ceramic White, Ceramic Black Phantom pink, Violet, Gray, White

Display

Size
6.8-inch 6.2-inch
Resolution
3200x1440px, 20:9 ratio, 515 PPI 2400x1080px, 20:9 ratio, 424 PPI
Technology
AMOLED Dynamic AMOLED
Refresh rate
120Hz 120Hz (adaptive)
Screen-to-body
91.24 % 86.06 %
Peak brightness
1700 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), Ambient light sensor, Proximity sensor
Additional display
1.1 inches, 294 x124 px, AMOLED, Touch screen: Yes, Capacitive

Hardware

System chip
Qualcomm Snapdragon 888 SM8350 (5 nm) Qualcomm Snapdragon 888 (5 nm)
Processor
Octa-core
Kryo 680
Octa-core
1x 2.84GHz Kryo 680 + 3x 2.42GHz Kryo 680 + 4x 1.80GHz Kryo 680
GPU
Adreno 660 Adreno 660
RAM
8GB (LPDDR5) 8GB (LPDDR5)
Internal storage
256GB (UFS 3.1) 128GB (UFS 3.0)
Storage expansion
not expandable not expandable
OS
Android (11), MIUI 12 UI Android (13, 12, 11), Samsung One UI

Battery

Capacity
5000 mAh 4000 mAh
Type
Li - Polymer Li - Polymer
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
Charge speed
Wired: 67.0W
Wireless: 67.0W
Wired: 25.0W
Wireless: 15.0W
PhoneArena Battery Tests
Battery Life Estimate
4h 58min
Browsing
8h 58min
Video
8h 7min
Gaming
8h 20min
Battery Life Estimate
4h 28min
Browsing
7h 47min
Video
7h 36min
Gaming
7h 9min

Camera

Rear
Triple camera Triple camera
Main camera
50 MP (OIS, Laser autofocus)
Aperture size: F1.9
Focal length: 24 mm
Sensor size: 1/1.12″
Pixel size: 1.4 μm
12 MP (OIS, PDAF)
Aperture size: F1.8
Focal length: 26 mm
Sensor size: 1/1.76"
Pixel size: 1.8 μm
Second camera
48 MP (Ultra-wide, PDAF)
Aperture size: F2.2
Focal Length: 12 mm
Sensor size: 1/2"
Pixel size: 0.8 μm
12 MP (Ultra-wide, Autofocus)
Aperture size: F2.2
Focal Length: 13 mm
Sensor size: 1/2.55"
Pixel size: 1.4 μm
Third camera
48 MP (Telephoto, Autofocus)
Optical zoom: 5.0x
Aperture size: F4.1
Focal Length: 120 mm
Sensor size: 1/2"
Pixel size: 0.8 μm
64 MP (Telephoto, OIS, PDAF)
Aperture size: F2.0
Focal Length: 29 mm
Sensor size: 1/1.7"
Pixel size: 0.8 μm
Flash
Tricolor LED LED
Video recording
7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (1920 fps), 1280x720 (HD) (1920 fps) 7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)
OIS, HDR, Hyperlapse, Continuous autofocus, Video light, EIS
Front
20 MP, Video capture: 1920x1080 (Full HD) 10 MP (PDAF, HDR), Video capture: 3840x2160 (4K UHD) (60 fps)

Connectivity & Features

Bluetooth
5.2 5.0
WLAN
802.11 b,g,n,ac,ax(Wi-Fi 6)
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 Type-C, USB 3.2
Hearing aid compatible
M3/T3
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, QZSS, NavIC, GNSS, Dual-band positioning, Cell ID, Wi-Fi positioning GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Other
NFC, Infrared NFC, ANT+

Multimedia

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

Cellular

5G
Bands n1, n3, n5, n7, n8, n20, n28, n38, n40, n41, n77, n78, n79, SA, NSA 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), 17(700 b), 20(800 DD), 28(700 APT), 32(1500 L-band), 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), 40(2300), 41(2600+), 42(3500) 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)
Data Speed
HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
Dual SIM
Yes
SIM type
Nano SIM Nano SIM

Regulatory Approval

FCC approval
Date approved: Mar 31, 2021
FCC ID value: 2AFZZK1G
Date approved: Dec 08, 2020
FCC ID value: A3LSMG991U
Measured SAR
Head: 0.84 W/kg
Body: 0.46 W/kg
Simultaneous Transmission: 1.59 W/kg
Wireless Router: 0.74 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
$ 800
In The Box
C to C Data Cable, Ejection Pin

Availability

Officially announced
Mar 29, 2021 Jan 14, 2021

Alternative variants

with 12GB RAM
RAM 12GB
MSRP € 1200
with 256GB storage
Internal storage 256GB
with 16GB RAM
RAM 16GB
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
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
FCC OKs Cingular\'s purchase of AT&T Wireless