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Samsung Galaxy S21 vs Xiaomi Mi 11 Ultra (256GB/8GB)

Side by side comparison between Samsung Galaxy S21 vs Xiaomi Mi 11 Ultra phones, differences, pros, cons and full specifications. What's the better?

,
6.2"
AMOLED

1080x2400

12.2
MP

10mp

8GB
RAM

Octa-core

4000
mAh

(Non removable)

vs
14Points Xiaomi Mi 11 Ultra (256GB/8GB) Compare Samsung Galaxy S21 X
6.81"
AMOLED

1440x3200

50
MP

20mp

8GB
RAM

Octa-core

5000
mAh

(Non removable)

What's the better phone? Xiaomi Mi 11 Ultra (256GB/8GB)

The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!

Galaxy S21} 10 Advantages Samsung Galaxy S21 vs Mi 11 Ultra (256GB/8GB)} 14 Advantages Xiaomi Mi 11 Ultra (256GB/8GB)
+169 grams (5.92 ounces)38%
Lighter
vs234 grams (8.19 ounces)
+7.9 millimeters (0.31 inches)6%
Thinner
vs8.38 millimeters (0.33 inches)
+Dynamic AMOLEDAdvantage
Dynamic AMOLED display is brighter and more vivid
vsAMOLED
+f/1.8 (aperture)11%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
vsf/2.0 (aperture)
+Android 15Advantage
Android 15 is newer and safer
vsAndroid 11
+(5G Sub6) 5000 Mbps43%
Faster for surfing the internet and download files
vs(5G SA/NSA) 3500 Mbps
+BarometerAdvantage
Sensors help you use the device
vsNot supported
+2 slots (Dual-SIM) + e-SIM (Eletronic)Advantage
You can have more mobile carriers/operators on the same device.
vs2 slots (Dual-SIM)
+FMAdvantage
The radio lets you listen to your songs and sports in general
vsNot supported
+USB 3.2 Type-C, USB OTG On-The-GoAdvantage
Newer and faster USB version for transferring photos, mp3 or data.
vsUSB 2.0 Type-C, USB OTG On-The-Go
2.9GHz 64bit Octa-core (5nm)vs+2.84GHz 64bit Octa-core (5nm)5%
More powerful processor, you can open your applications faster
128GB (104GB available)vs+256GB (230GB available)121%
More internal storage for applications and files
Aluminum body, glass front, plastic backvs+Aluminum body, glass front, ceramic backAdvantage
More resistant material
16 millionvs+1 billion62 times
More colors on the screen is better quality images and videos
1080x2400 pixelsvs+1440x3200 pixels78%
Higher resolution screen
424 PPIvs+515 PPI21%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
6.2"vs+6.81"10%
Larger screen
(triple camera) 12.2MP + 64MP + 12MPvs+(triple camera) 50MP + 48MP + 48MP65%
Higher resolution main camera
LED flashvs+Dual-LED flashAdvantage
The Dual-LED flash helps in dark places or in low light
1/1.76" inchesvs+1/1.12" inches57%
The larger sensor camera lets you take photos with better depth.
(front) 10MPvs+(front) 20MP98%
Higher resolution secondary camera to take pictures and selfies
4000 mAhvs+5000 mAh25%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
25Wvs+67W168%
More power (watts) to charge the battery faster. Sometimes, the charger that comes with the device doesn't have the same power supported by the device. Check before you buy it.
5.0 + A2DP/LEvs+5.2 + A2DP/LEAdvantage
Bluetooth 5.2 + A2DP/LE is newer and faster

35 Common items in both devices
8GB LPDDR5
UFS 3.1
HDR10+ / Dolby Vision/HDR10+
120Hz
Digital and optical zoom
PDAF: phase detection autofocus on both cameras / PDAF: phase detection autofocus
OIS: Optical stabilization
+28 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differences Clear highlight

📱 Model features

Galaxy S21Xiaomi Mi 11 Ultra (256GB/8GB)
Change model 
ModelGalaxy S21Xiaomi Mi 11 Ultra (256GB/8GB)
Other model namesGalaxy S21 5G SM-G991B/DSXiaomi Mi 11 Ultra (256GB + 8GB RAM)
Country or region available(Global, International)
(Global, International)
(Global, International)
(Global, International)
BrandSamsungXiaomi
Release date1/29/2021, Announced: 1/14/20214/2/2021, Announced: 3/29/2021
Depth7.9 millimeters (0.31 inches)8.38 millimeters (0.33 inches)
Size (width x height)71.2 x 151.7 millimeters (2.8 x 5.97 in)74.6 x 164.3 millimeters (2.94 x 6.47 in)
Weight169 grams (5.92 ounces)234 grams (8.19 ounces)
Build, materialsAluminum body, glass front, plastic backAluminum body, glass front, ceramic back
Protection against water and othersIP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistantIP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant

📲 Display

Galaxy S21Xiaomi Mi 11 Ultra (256GB/8GB)
Display typeDynamic AMOLEDAMOLED
Screen size6.2" inches6.81" inches
Screen-to-body ratio~85.9% (screen-to-body ratio)~91.4% (screen-to-body ratio)
Display resolution1080x2400 pixels (20:9)1440x3200 pixels (20:9)
TouchscreenCapacitive Multitouch 10-pointsCapacitive Multitouch
Pixel density (dot pitch)424 PPI515 PPI
Colors16 million1 billion
Scratch-resistant glassGorilla Glass VictusGorilla Glass Victus
Refresh rate120Hz120Hz
Display features1300nits[peak]
HDR10+
Always-On Display
1700nits[peak]
Dolby Vision/HDR10+

🤖 Operating System

Galaxy S21Xiaomi Mi 11 Ultra (256GB/8GB)
System versionAndroid 11Android 11
Firmware updateAndroid 15feature not registered
User InterfaceOne UI 3.1 / 4.1 / 5.1 / 6.0 / 7.0feature not registered

⚙️ Processor

Galaxy S21Xiaomi Mi 11 Ultra (256GB/8GB)
Chipset64bit: Samsung Exynos 2100 (5nm)64bit: Qualcomm Snapdragon 888 (SM8350) (5nm)
CPUOcta-core, 3 processors:
1x 2.9GHz ARM Cortex-X1 (Single-core)
3x 2.8GHz ARM Cortex-A78 (Triple-core)
4x 2.2GHz ARM Cortex-A55 (Quad-core)
Octa-core, 3 processors:
1x 2.84GHz Kryo 680 (Single-core)
3x 2.42GHz Kryo 680 (Triple-core)
4x 1.8GHz Kryo 680 (Quad-core)
GPU graphical controllerARM Mali-G78 MP14 (854MHz)Qualcomm Adreno 660 (840MHz)
Performance (benchmark)feature not registeredfeature not registered

💽 Memory and storage

Galaxy S21Xiaomi Mi 11 Ultra (256GB/8GB)
RAM memory8GB LPDDR58GB LPDDR5
Internal storage128GB (104GB available)
UFS 3.1
256GB (230GB available)
UFS 3.1
External storageNot supportedNot supported

📶 Mobile networks

Galaxy S21Xiaomi Mi 11 Ultra (256GB/8GB)
Dual-SIMDual-SIM Standby - Call active on one sim cardDual-SIM Standby - Call active on one sim card
SIM card2 slots (Dual-SIM)
nano-SIM (4FF) + e-SIM
2 slots (Dual-SIM)
nano-SIM (4FF)
Maximum Download / Upload5000/1920 Mbps3500/1024 Mbps
Network technology2G, 3G, 4G, 5G2G, 3G, 4G, 5G
Frequency, bands Expand band details Collapse details
GSM MHz bandQuad-Band 850/900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkCDMA 800/1900, GSM 850/900/1800/1900CDMA 800, GSM 850/900/1800/1900
Primary 3G networkCDMA2000 1xEV-DO
TD-SCDMA 1900/2000
UMTS 850/900/1700/1900/2100
CDMA2000 1xEV-DO
UMTS 850/900/1700/1900/2100
Primary 4G networkLTE Cat24 ()
TD-LTE ()
VoLTE
LTE Cat20
VoLTE
Global version:
LTE (1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 32, 66)
TD-LTE (38, 40, 41, 42)
China version:
LTE (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28)
TD-LTE (34, 38, 39, 40, 41, 42)
Primary 5G networkSA/NSA/Sub6 ()Global version:
SA/NSA (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 77, 78, 79)
China version:
SA/NSA (1, 3, 28, 41, 77, 78, 79)
Primary data networkGPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA
Secondary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Secondary 3G networkUMTS 850/900/1700/1900/2100Not supported
Secondary 4G networkLTE Cat24 ()
TD-LTE ()
VoLTE
Not supported
Secondary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-AGPRS, EDGE

📷 Camera

Galaxy S21Xiaomi Mi 11 Ultra (256GB/8GB)
Back camera (main camera)(triple camera)
12.2 megapixels
64MP telephoto f/2.029mm1/1.72"0.8µmPDAFOIS1.1x-optical-zoom3x-hybrid-zoom
12MP ultrawide f/2.213mm120°1/2.55"1.4µmSuper-Steady-video
(triple camera)
50 megapixels
48MP periscope telephoto f/4.1120mm1/2.0"0.8µmPDAFOIS5x-optical-zoom
48MP ultrawide f/2.212mm128°1/2.0"0.8µmPDAF
Main camera resolution4032x3024 pixels8160x6120 pixels
Video recording (primary)8K UHD (7680x4320) 24 fps8K UHD (7680x4320) 24 fps
FlashLED flashDual-LED flash
Focal aperturef/1.8 (aperture)f/2.0 (aperture)
Focal length26mm (lens)24mm (lens)
Sensor size1/1.76" inches1/1.12" inches
Pixel size1.8µm pixel1.4µm pixel
AutofocusPDAF: phase detection autofocus on both camerasPDAF: phase detection autofocus
Touch focusSupportedSupported
Image stabilizationOIS: Optical stabilizationOIS: Optical stabilization
ZoomDigital and optical zoomDigital and optical zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorSupportedSupported
HDRHDR photo/video on both camerasHDR photo/video on both cameras
Camera extras4K@60fps
1080p@240fps
720p@960fps
feature not registered

📸 Front camera

Galaxy S21Xiaomi Mi 11 Ultra (256GB/8GB)
Front camera (secondary)10 megapixels20 megapixels
Front camera resolution3872x2592 pixels5184x3840 pixels
Video recording (secondary)4K UHD (3840x2160)4K UHD (3840x2160)
Front flashNot supportedNot supported
Focal aperturef/2.2 (aperture)f/2.2 (aperture)
Focal length26mm (lens)27mm (lens)
Sensor size1/3.24" inches1/3.4" inches
Pixel size1.22µm pixel0.8µm pixel

🔉 Sound and multimedia

Galaxy S21Xiaomi Mi 11 Ultra (256GB/8GB)
LoudspeakerStereo sound
32-bit/384kHz
Dolby Atmos
Tuned by AKG
Supported
Active noise cancellation2 microphones2 microphones or more
RadioFMNot supported
TVNot supportedNot supported
Video formatsMP4, H.265, H.264, H.263, XviD, MKVMP4, H.265, H.264, H.263, XviD, MKV
Audio formatsMP3, WAV, WMA, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC

🔌 Connectivity

Galaxy S21Xiaomi Mi 11 Ultra (256GB/8GB)
USBUSB 3.2 Type-C, USB OTG On-The-GoUSB 2.0 Type-C, USB OTG On-The-Go
Audio outputType-C reversible connectorType-C jack with 3.5mm jack adapter
TV outputUSB Type-C (reversible)USB Type-C (reversible)
Bluetooth5.0 + A2DP/LE5.2 + A2DP/LE
WiFi802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO
WiFi Direct, hotspot
802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO
WiFi Direct, hotspot
DLNASupportedSupported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDouA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS, NavIC
NFCSupportedSupported
Infrared portNot supportedSupported

🧭 Sensors

Galaxy S21Xiaomi Mi 11 Ultra (256GB/8GB)
SensorsAccelerometer
Ambient light sensor
Barometer
Compass
Face unlock
Fingerprint sensor (under display)
Gesture
Gyroscope
Hall effect
Proximity sensor
Accelerometer
Ambient light sensor
Compass
Face unlock
Fingerprint sensor (under display)
Gyroscope
Proximity sensor
Vibrating alertSupportedSupported

🔋 Battery

Galaxy S21Xiaomi Mi 11 Ultra (256GB/8GB)
Battery typeLiPo: li-ion polymer (Non removable)LiPo: li-ion polymer (Non removable)
Battery capacity4000 mAh5000 mAh
Charger, watts25W Wired fast charging
USB Power Delivery 3.0
67W Wired fast charging
Quick Charge 4+
USB Power Delivery 3.0
Inductive / wireless charging15W Qi wireless charging (Qi/PMA)
4.5W Reverse wireless charging
67W Qi wireless charging
10W Reverse wireless charging
Talk time autonomyfeature not registeredfeature not registered
Standbyfeature not registeredfeature not registered

➕ Other features

Galaxy S21Xiaomi Mi 11 Ultra (256GB/8GB)
Call controlVoice dialing, Voice recorder, Voice commandsVoice dialing, Voice recorder, Voice commands
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
Hands-free callingSupportedSupported
Video callingSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
AntennaInternal antennaInternal antenna
Qwerty physical keyboardNot supportedNot supported
Miscellaneous• Colors: Phantom Gray, White, Violet, Pink
• Samsung Pay (Visa, MasterCard)
• Samsung DeX
• Colors: Ceramic black, Ceramic white
• MIUI 12.5
• Screen protector included
• Protective case included
• 24-bit/192kHz audio
• Tuned by Harman Kardon
• Secondary 1.1" AMOLED display next to the rear camera

☢️ Radiation rate

Galaxy S21Xiaomi Mi 11 Ultra (256GB/8GB)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registeredfeature not registered
SAR 2W/kg (Europe, UK, etc.)0.456W/kg (head), 1.509W/kg (body)feature not registered
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