Xiaomi Mi 11i 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.

7.9	9.1
Xiaomi Mi 11i	Samsung Galaxy S21 Ultra
Released · May 31, 2021	Released · Jan 29, 2021
6.7-inch · 2400x1080px	6.8-inch · 3200x1440px
Triple camera	Quad camera
8GB · 128GB	12GB · 128GB
4520 mAh	5000 mAh
Check prices	Check prices

Design

Dimensions
6.44 x 3.01 x 0.31 inches 163.7 x 76.4 x 7.8 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 (Corning Gorilla Glass 5)	Back: Glass (Corning Gorilla Glass Victus) Frame: Aluminum
Resistance
	Water, Dust; IP68
Biometrics
2D Face unlock, Fingerprint (touch)	2D Face unlock, Ultrasonic in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Cosmic Black, Frosty White, Celestial Silver	Phantom black, Silver

Display

Size
6.7-inch	6.8-inch
Resolution
2400x1080px, 20:9 ratio, 395 PPI	3200x1440px, 20:9 ratio, 516 PPI
Technology
AMOLED	Dynamic AMOLED
Refresh rate
120Hz	120Hz (adaptable)
Screen-to-body
85.89 %	89.33 %
Peak brightness
1300 cd/m2 (nit)	1500 cd/m2 (nit)
Features
HDR support, 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

Hardware

System chip
Qualcomm Snapdragon 888 SM8350 (5 nm)	Qualcomm Snapdragon 888 SM8350 (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)	12GB (LPDDR5)
Internal storage
128GB (UFS 3.1)	128GB (UFS 3.1)
Storage expansion
	not expandable
OS
Android (11), MIUI 12 UI	Android (14, 13, 12, 11), One UI

Battery

Capacity
4520 mAh	5000 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: 33.0W	Wired: 25.0W Wireless: 15.0W

Battery Life Estimate

5h 44min

Browsing

10h 38min

Video

9h 23min

Gaming

9h 14min

Battery Life Estimate

6h 15min

Browsing

14h 43min

Video

8h 52min

Gaming

8h 40min

Camera

Rear
Triple camera	Quad camera
Main camera
108 MP (Autofocus) Aperture size: F1.8 Sensor size: 1/1.52” Pixel size: 0.7 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
8 MP (Ultra-wide) Aperture size: F2.2	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
7680x4320 (8K UHD) (30 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (60 fps), 1280x720 (HD) (30 fps) HDR, Time-lapse video	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
20 MP (HDR)	40 MP (PDAF, HDR), Video capture: 3840x2160 (4K UHD) (60 fps)

Connectivity & Features

Bluetooth
5.2	5.1
WLAN
802.11 a,b,g,n,ac,ax(Wi-Fi 6) MIMO, 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, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Altimeter, Compass, Barometer	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
Dolby Atmos	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, n41, n77, n78	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), 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+)	Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)
3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 6(800)	Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS	LTE-A Pro Cat 20 (2000/150 Mbit/s)
Dual SIM
Yes
SIM type
Nano SIM	Nano SIM

Regulatory Approval

FCC approval
Date approved: Mar 30, 2021 FCC ID value: 2AFZZK11G	Date approved: Dec 22, 2020 FCC ID value: A3LSMG998U
Measured SAR
Head: 0.95 W/kg Body: 0.74 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 0.93 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

Buyers information

MSRP
€ 649	$ 1200 / € 1399
In The Box
33W Power Adapter, USB Type-C Cable, Type-C to 3.5 mm Headphone Adapter, SIM Eject Tool, Protective Case, User Guide, Warranty Card	C to C Data Cable, Ejection Pin

Availability

Officially announced
Mar 29, 2021	Jan 14, 2021

Alternative variants

with 256GB storage


Internal storage	256GB
MSRP	€ 699

with 256GB storage


Internal storage	256GB
Colors	Phantom black
MSRP	$ 1250

with 512GB storage


RAM	16GB
Internal storage	512GB
Colors	Phantom black
MSRP	$ 1380

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