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Xiaomi Black Shark 3S (128GB) vs Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)

Side by side comparison between Xiaomi Black Shark 3S vs Samsung Galaxy S21 Ultra phones, differences, pros, cons and full specifications. What's the better?

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Compare Samsung Galaxy S21 Ultra XXiaomi Black Shark 3S (128GB)03Points
Xiaomi Black Shark 3S (128GB)
6.67"
AMOLED

1080x2400

64
MP

20mp

12GB
RAM

64bit Octa

4729
mAh

(Non removable)

vs
26PointsSamsung Galaxy S21 Ultra (SM-G998B/DS 128GB)Compare Xiaomi Black Shark 3S X
Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)
6.8"
AMOLED

1440x3200

108
MP

40mp

12GB
RAM

64bit Octa

5000
mAh

(Non removable)

What's the better phone? Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)

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!

Black Shark 3S (128GB)3 Advantages Xiaomi Black Shark 3S (128GB)vsGalaxy S21 Ultra (SM-G998B/DS 128GB)26 Advantages Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)
+222 grams (7.77 ounces)2%
Lighter
vs227 grams (7.95 ounces)
+3.5mm jackAdvantage
Headsets with 3.5mm Jack size are more common and easy to find in stores
vsType-C reversible connector
+65W160%
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.
vs25W
2.84GHz 64bit Octa-Corevs+2.9GHz 64bit Octa-Core5%
More powerful processor, you can open your applications faster
10.4 millimeters (0.41 inches)vs+8.9 millimeters (0.35 inches)17%
Thinner
AMOLEDvs+Dynamic AMOLEDAdvantage
Dynamic AMOLED display is brighter and more vivid
1080x2400 pixelsvs+1440x3200 pixels78%
Higher resolution screen
395 PPIvs+516 PPI31%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
6.67"vs+6.8"2%
Larger screen
(triple camera) 64MP + 13MP + 5MPvs+(quad camera) 108MP + 10MP + 10MP + 12MP71%
Higher resolution main camera
Only digital zoomvs+Digital and optical zoomAdvantage
The zoom allows for better focus and approach to take pictures
EIS: Digital stabilizationvs+OIS: Optical stabilizationAdvantage
Image stabilization prevents blurry photos and helps in recording motion video
1/1.72" inchesvs+1/1.33" inches29%
The larger sensor camera lets you take photos with better depth.
(front) 20MPvs+(front) 40MP101%
Higher resolution secondary camera to take pictures and selfies
4K UHD (3840x2160)vs+8K UHD (7680x4320)3 times
More image quality for recording videos with the primary camera
(front) Full HD (1920x1080)vs+(front) 4K UHD (3840x2160)3 times
More image quality for recording videos with the secondary camera
Android 11vs+Android 12Advantage
Android 12 is newer and safer
(5G SA/NSA) 2000 Mbpsvs+(5G SA/NSA) 5000 Mbps150%
Faster for surfing the internet and download files
Not supportedvs+ANT+Advantage
Sensors help you use the device
Not supportedvs+BarometerAdvantage
Sensors help you use the device
4729 mAhvs+5000 mAh6%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
2 slots (Dual-SIM)vs+2 slots (Dual-SIM) + e-SIM (Eletronic)Advantage
More SIM card slots. You can choose more carriers.
Not supportedvs+FMAdvantage
The radio lets you listen to your songs and sports in general
Not supportedvs+DLNAAdvantage
With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.
5.0 + A2DP/LEvs+5.2 + A2DP/LEAdvantage
Bluetooth 5.2 + A2DP/LE is newer and faster
Not supportedvs+NFCAdvantage
NFC allows you to make payments by approach quickly and securely
USB 2.0 Type-C, USB OTG On-The-Govs+USB 3.2 Type-C, USB OTG On-The-GoAdvantage
Newer and faster USB version for transferring photos, mp3 or data.
Not supportedvs+Gorilla Glass VictusAdvantage
Protection against scratches on the screen lets you carry your phone with your keys
Not supportedvs+IP68 certifiedAdvantage
Protection against water allows you talk to your friends in the rain, for example

32 Common items in both devices
12GB LPDDR5
128GB (108GB available) / 128GB (101GB available)
UFS 3.1
Aluminum body, glass front / Aluminum frame, glass front/back
HDR10+
120Hz
16 million
+25 specs and more in the table below

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

Highlight differencesClear highlight

📱 Model features

Xiaomi Black Shark 3S (128GB)Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)
ModelBlack Shark 3S (128GB)Galaxy S21 Ultra (SM-G998B/DS 128GB)
Other model names小米 Black Shark 3S 5G (128GB + 12GB RAM)Galaxy S21 Ultra 5G (SM-G998B/Dual-SIM)
Country or region available(Global, International)
(Global, International)
(Global, International)
(Global, International)
BrandXiaomiSamsung
Release date8/4/2020, Announced: 7/31/20201/29/2021, Announced: 1/14/2021
Depth10.4 millimeters (0.41 inches)8.9 millimeters (0.35 inches)
Size (width x height)77.33 x 168.72 millimeters (3.04 x 6.64 in)75.6 x 165.1 millimeters (2.98 x 6.5 in)
Weight222 grams (7.77 ounces)227 grams (7.95 ounces)
Build, materialsAluminum body, glass frontAluminum frame, glass front/back
Protection against water and othersNot supportedIP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant

🤖 Operating System

Xiaomi Black Shark 3S (128GB)Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)
System versionAndroid 10Android 11
Firmware updateAndroid 11Android 12
User InterfaceJOYUI 12One UI 3.1

⚙️ Processor

Xiaomi Black Shark 3S (128GB)Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)
Chipset64bit - Qualcomm Snapdragon 865 (SM8250) (7nm)64bit - Samsung Exynos 2100 (5nm)
CPUOcta-Core, 3 processors:
2.84GHz Single-Core Kryo 585
2.42GHz Triple-Core Kryo 585
1.8GHz Quad-Core Kryo 585
Octa-Core, 3 processors:
2.9GHz Single-Core ARM Cortex-X1
2.8GHz Triple-Core ARM Cortex-A78
2.2GHz Quad-Core ARM Cortex-A55
GPU graphical controllerQualcomm Adreno 650 (250-587MHz)ARM Mali-G78 MP14 (854MHz)
Performance (benchmark)AnTuTu: 618083 (v8)AnTuTu: 657150 (v8), 727634 (v9)
Geekbench: 3457 (v5.2)
GFXBench: 51fps (ES 3.1 onscreen)

💽 Memory and storage

Xiaomi Black Shark 3S (128GB)Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)
RAM memory12GB LPDDR512GB LPDDR5
Internal storage128GB (108GB available)
UFS 3.1
128GB (101GB available)
UFS 3.1
External storageNot supportedNot supported

📲 Display

Xiaomi Black Shark 3S (128GB)Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)
Display typeAMOLEDDynamic AMOLED
Screen size6.67" inches6.8" inches
Screen-to-body ratio~82.3% (screen-to-body ratio)~89.4% (screen-to-body ratio)
Display resolution1080x2400 pixels (20:9)1440x3200 pixels (20:9)
TouchscreenCapacitive Multitouch 10-pointsCapacitive Multitouch 10-points
Pixel density (dot pitch)395 PPI516 PPI
Colors16 million16 million
Scratch-resistant glassNot supportedGorilla Glass Victus
Display features120Hz, 500nits[typ]
HDR10+
Always-On Display
120Hz, 1500nits[peak]
HDR10+
Always-On Display

📶 Mobile networks

Xiaomi Black Shark 3S (128GB)Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)
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)
2 slots (Dual-SIM)
nano-SIM (4FF) + e-SIM
Maximum download/upload2000/1024 Mbps5000/1920 Mbps
Network technology2G, 3G, 4G, 5G2G, 3G, 4G, 5G
Frequency, bandsExpand band detailsCollapse details
GSM MHz bandQuad-Band 850/900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkCDMA 800, GSM 850/900/1800/1900GSM 850/900/1800/1900
Primary 3G networkCDMA2000 1xEV-DO
TD-SCDMA 1900/2000
UMTS 800/850/900/1700/1900/2100
UMTS 850/900/1700/1900/2100
Primary 4G networkLTE Cat20 (1, 3, 4, 5, 7, 8, 12, 17, 20)
TD-LTE (34, 38, 39, 40, 41)
VoLTE
LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66)
TD-LTE (38, 39, 40, 41)
VoLTE
Primary 5G networkSA/NSA (41, 78, 79)SA/NSA/Sub6 (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78)
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, 5G SA/NSAGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, 5G SA/NSA
Secondary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Secondary 3G networkUMTS 800/850/900/1700/1900/2100UMTS 850/900/1700/1900/2100
Secondary 4G networkLTE Cat20 (1, 3, 4, 5, 7, 8, 12, 17, 20)
TD-LTE (34, 38, 39, 40, 41)
VoLTE
LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66)
TD-LTE (38, 39, 40, 41)
VoLTE
Secondary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-AGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, 5G SA/NSA

📷 Camera

Xiaomi Black Shark 3S (128GB)Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)
Back camera (main camera)(triple camera)
64 megapixels
13MP ultrawidef/2.3120°
5MP depthf/2.2
(quad camera)
108 megapixels
10MP periscope telephotof/4.9240mm1/3.24"1.22µmPDAFOIS10x-optical-zoom
10MP telephotof/2.470mm1/3.24"1.22µmPDAFOIS3x-optical-zoom
12MP ultrawidef/2.213mm1/2.55"1.4µmPDAFSuper-Steady-video
Main camera resolution10120x6328 pixels12000x9000 pixels
Video recording (primary)4K UHD (3840x2160) 60 fps8K UHD (7680x4320) 24 fps
FlashLED flashLED flash
Focal aperturef/1.8 (aperture)f/1.8 (aperture)
Focal length26mm lens26mm lens
Sensor size1/1.72" inches1/1.33" inches
Pixel size0.8µm pixel1.8µm pixel
AutofocusPDAF: phase detection autofocusPDAF: phase detection autofocus on both cameras
Touch focusSupportedSupported
Image stabilizationEIS: Digital stabilizationOIS: Optical stabilization
ZoomOnly digital zoomDigital and optical zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorSupportedSupported
HDRHDR photo on both camerasHDR photo/video on both cameras
Camera extras1080p@240fps
720p@1920fps
4K@60fps
1080p@240fps
720p@960fps

📸 Front camera

Xiaomi Black Shark 3S (128GB)Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)
Front camera (secondary)20 megapixels40 megapixels
Front camera resolution5184x3840 pixels7296x5472 pixels
Video recording (secondary)Full HD (1920x1080)4K UHD (3840x2160)
Front flashNot supportedNot supported
Focal aperturef/2.0 (aperture)f/2.2 (aperture)
Focal lengthfeature not registered26mm lens
Sensor size1/3" inches1/2.8" inches
Pixel size0.9µm pixel0.7µm pixel

🔉 Sound and multimedia

Xiaomi Black Shark 3S (128GB)Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)
LoudspeakerStereo soundStereo sound
32-bit/384kHz
Dolby Atmos
Tuned by AKG
Active noise cancellation2 microphones or more2 microphones or more
RadioNot supportedFM
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

Xiaomi Black Shark 3S (128GB)Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)
USBUSB 2.0 Type-C, USB OTG On-The-GoUSB 3.2 Type-C, USB OTG On-The-Go
Audio output3.5mm jackType-C reversible connector
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
DLNANot supportedSupported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFCNot supportedSupported
Infrared portNot supportedNot supported

🧭 Sensors

Xiaomi Black Shark 3S (128GB)Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)
SensorsAccelerometer
Ambient Light sensor
Compass
Face unlock
Fingerprint sensor (under display)
Gyroscope
Proximity sensor
Accelerometer
Ambient Light sensor
ANT+
Barometer
Compass
Face unlock
Fingerprint sensor (under display)
Gesture
Gyroscope
Hall effect
Proximity sensor
Vibrating alertSupportedSupported

🔋 Battery

Xiaomi Black Shark 3S (128GB)Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)
Battery typeLiPo: Li-Ion polymer (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity4729 mAh5000 mAh
Charger, watts65W Fast battery charging
Magnetic charging (dock)
Quick Charge 4
25W Fast battery charging
15W Qi wireless charging (Qi/PMA)
4.5W Reverse wireless charging between devices
USB Power Delivery 3.0
Talk time autonomyfeature not registeredfeature not registered
Standbyfeature not registeredfeature not registered

➕ Other features

Xiaomi Black Shark 3S (128GB)Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)
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: Sky Cloud Black, Crystal Blue
- Liquid Cooling System
- Physical pop-up gaming triggers
- Colors: Phantom Black, Silver, Titanium, Navy, Brown
- Samsung Pay (Visa, MasterCard)
- Samsung DeX
- Stylus pen support

☢️ Radiation rate

Xiaomi Black Shark 3S (128GB)Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registered0.24W/kg (head), 0.72W/kg (body)
SAR 2W/kg (Europe, UK, etc.)feature not registered0.714W/kg (head), 1.58W/kg (body)
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