Xiaomi Mi 11 vs Samsung Galaxy S21 Ultra 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.

8.0	9.1
Xiaomi Mi 11	Samsung Galaxy S21 Ultra
Released · Jul 02, 2021	Released · Jan 29, 2021
6.8-inch	6.8-inch
Triple camera	Quad camera
8GB · 128GB	12GB · 128GB
4600 mAh	5000 mAh
	Check prices

Availability

Officially announced
Feb 08, 2021	Jan 14, 2021
Prices (MSRP)
€749	$1200 \| €1399

Design

Dimensions
6.47 x 2.94 x 0.32 inches 164.3 x 74.6 x 8.06 mm	6.50 x 2.98 x 0.35 inches (~0.37 inches with camera bump) 165.1 x 75.6 x 8.9 mm (~9.4 mm with camera bump)
Weight
6.91 oz (196.0 g)	8.04 oz (229.0 g)
Materials
Back: Glass Frame: Metal	Back: Glass (Corning Gorilla Glass Victus) Frame: Aluminum
Resistance
	Water, Dust; IP68
Biometrics
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
Midnight gray, Horizon blue	Phantom black, Silver

Display

Size
6.8-inch, 91.24% screen-to-body	6.8-inch, 89.33% screen-to-body
Type
AMOLED, 120Hz, HDR, 1500 nits	Dynamic AMOLED, 120Hz, HDR, 1500 nits
Resolution
3200x1440px, 20:9 ratio, 515 PPI	3200x1440px, 20:9 ratio, 516 PPI
Protection
Corning Gorilla Glass Victus	Corning Gorilla Glass Victus

Hardware

System chip
Snapdragon 888 (5 nm)	Snapdragon 888 SM8350 (5 nm)
Processor
Octa-core 2840 MHz Kryo 680	Octa-core 1x2.84GHz Kryo 680 3x2.42GHz Kryo 680 4x1.80GHz Kryo 680
GPU
Adreno 660	Adreno 660
Memory
8GB (LPDDR5)/128GB (UFS 3.1) 8GB/256GB 12GB/128GB	12GB (LPDDR5)/128GB (UFS 3.1) 12GB/256GB 16GB/512GB
Storage expansion
not expandable	not expandable
OS
Android (11)	Android (14, 13, 12, 11)

Battery

Type
4600 mAh	5000 mAh, Li - Polymer
Charging
Qualcomm Quick Charge 5 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: 55.0W Wireless: 50.0W	Wired: 25.0W Wireless: 15.0W

Battery Life Estimate

4h 53min

Browsing

9h 40min

Video

6h 38min

Gaming

10h 17min

Battery Life Estimate

6h 15min

Browsing

14h 43min

Video

8h 52min

Gaming

8h 40min

Camera

Rear
Triple camera	Quad camera
Main camera
108 MP (OIS, Autofocus) Aperture size: F1.9 Sensor size: 1/1.33" Pixel size: 0.8 μm	108 MP (OIS, Laser and PDAF) Aperture size: F1.8 Focal length: 24 mm Sensor size: 1/1.33" Pixel size: 0.8 μm
Second camera
13 MP (Ultra-wide) Aperture size: F2.4	12 MP (Ultra-wide, PDAF) Aperture size: F2.2 Focal Length: 13 mm Sensor size: 1/2.55" Pixel size: 1.4 μm
Third camera
5 MP (Telephoto, Macro) Aperture size: F2.4	10 MP (Telephoto, OIS, PDAF) Optical zoom: 3.0x Aperture size: F2.4 Focal Length: 70 mm Sensor size: 1/3.2" Pixel size: 1.22 μm
Fourth camera
	10 MP (Telephoto, Periscope, OIS, PDAF) Optical zoom: 3.0x Aperture size: F2.4 Focal Length: 70 mm Sensor size: 1/3.2" Pixel size: 1.22 μm
Flash
LED	LED
Video recording
8K UHD (30 fps), 4K UHD (30 fps), 1080p (240 fps), 720p (240 fps) OIS, HDR, Continuous autofocus	8K UHD (24 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (960 fps) OIS, HDR, Hyperlapse, Video light, EIS
Front
20 MP (Autofocus)	40 MP (PDAF, HDR) Video capture: 4K UHD (60 fps)

Connectivity & Features

Bluetooth
5.2	5.1
WLAN
a,b,g,n,ac,Wi-Fi 6 MIMO, Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac, ax	a,b,g,n,ac,Wi-Fi 6,dual-band MIMO, Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac, ax
USB
Type-C, USB 3.1	Type-C, USB 3.2
Sensors
Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer, Ambient light sensor, Proximity sensor
Hearing aid compatible
	M3/T3
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, QZSS, SBAS, NavIC, GNSS, Dual-band positioning, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
NFC, Infrared	NFC, ANT+

Multimedia

Headphones
	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
Additional microphone(s)
Noise cancellation

Cellular

5G Bands
n1, n3, n5, n8, n20, n28, n38, n41, n77, n78, n79	n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave
4G (FDD) Bands
1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 32, 66	1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71
4G (TDD) Bands
38, 40, 41, 42	38, 39, 40, 41, 46, 48
3G Bands
1, 2, 4, 5, 8	1, 2, 4, 5, 8
Data Speed
	LTE-A Pro Cat 20 (2000/150 Mbit/s)
Dual SIM
Yes
SIM type
Nano SIM	Nano SIM

Regulatory Approval

FCC approval
Date approved: Jan 12, 2021 FCC ID value: 2AFZZK2G	Date approved: Dec 22, 2020 FCC ID value: A3LSMG998U
Measured SAR
Head: 0.95 W/kg Body: 0.65 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 0.75 W/kg	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

Alternative variants

with 256GB storage


Memory	256GB

with 256GB storage


Memory	256GB
Colors	Phantom black
Prices (MSRP)	$1250

with 12GB RAM


Memory	12GB

with 512GB storage


Memory	16GB/512GB
Colors	Phantom black
Prices (MSRP)	$1380

for Europe


System chip	Samsung Exynos 2100 (5 nm)
Processor	Octa-core 1x2.91GHz Cortex-X1 3x2.81GHz Cortex-A78 4x2.2GHz Cortex-A55
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

Links

Full specifications
Xiaomi Mi 11 Specs	Samsung Galaxy S21 Ultra Specs
PhoneArena Review
Xiaomi Mi 11 Review	Samsung Galaxy S21 Ultra Review
User Reviews
	Samsung Galaxy S21 Ultra User Reviews