Xiaomi MI Mix 3 5G vs. Samsung Galaxy S20 Ultra 5G

Phone Comparison, Reviews and Tests

In depth comparison and review of Xiaomi MI Mix 3 5G and Samsung Galaxy S20 Ultra 5G. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.

Phone Specifications Comparison

Xiaomi MI Mix 3 5G vs. Samsung Galaxy S20 Ultra 5G Comparison Chart
DESIGN AND DIMENSIONS Xiaomi MI Mix 3 5G Samsung Galaxy S20 Ultra 5G
Product Type Smartphone Smartphone
Manufacturer Model Number - SM-G988B/DS
Form Factor Touch slider Touch
Height 157.89 mm 166.9 mm Samsung Galaxy S20 Ultra 5G has greater height than Xiaomi MI Mix 3 5G.
Width 74.69 mm 76 mm Samsung Galaxy S20 Ultra 5G has greater width than Xiaomi MI Mix 3 5G.
Depth 8.46 mm 8.8 mm Xiaomi MI Mix 3 5G is narrower than Xiaomi MI Mix 3 5G.
Weight 225 g 220 g Samsung Galaxy S20 Ultra 5G is lighter than Xiaomi MI Mix 3 5G.
Body Colour Sapphire blue | Onyx black Cosmic black | Cosmic grey | Cloud white
Protection - Dustproof, splashproof, water-resistant
Waterproof (Water-resistant) - Yes Samsung Galaxy S20 Ultra 5G is waterproof.
IP rating - IP68
SAR Value 1.577 W/kg (body), 1.557 W/kg (head) 1.557 W/kg (body), 0.66 W/kg (head)
Connector Type USB Type-C - 24 pin USB-C USB Type-C - 24 pin USB-C
SIM Card Type (Size) - Nano SIM, Electronic SIM card (e-SIM)
SIM Card Qty Single-SIM Dual-SIM
SIM Card Configuration Details - Nano SIM + nano SIM/microSD
DISPLAY Xiaomi MI Mix 3 5G Samsung Galaxy S20 Ultra 5G
Display Type OLED display OLED display
Display Technology AMOLED Infinity-O Dynamic AMOLED 2X
Screen Size (Display Size) 6.39" 6.9" Samsung Galaxy S20 Ultra 5G has larger screen size than Xiaomi MI Mix 3 5G.
Screen Resolution (Display Resolution) 2340 x 1080 pixels 3200 x 1440 pixels Samsung Galaxy S20 Ultra 5G has better screen resolution than Xiaomi MI Mix 3 5G.
Display Format Full HD+ QHD+
Pixel Density 403 ppi 511 ppi Samsung Galaxy S20 Ultra 5G has better pixel density than Xiaomi MI Mix 3 5G.
Aspect Ratio 19.5:9 -
Max Brightness 600 cd/m² -
Colour Depth - 16.7 million colours
Contrast Ratio 60000:1 -
HDR Yes Yes Both phones have HDR.
HDR Technology - HDR10+
Display Enhancement Technology Sunlight mode -
Display Refresh Rate - 120 Hz
Display Features Always-on display, Reading mode, Colour temperature adjustment, night mode Edge Screen, DCI-P3 Wide colour gamut, AOD(Always On Display), Edge Lighting
PROCESSOR Xiaomi MI Mix 3 5G Samsung Galaxy S20 Ultra 5G
Processor Type (CPU) Qualcomm Snapdragon 855 Samsung Exynos 990
Clock Speed 2.84 GHz 2.73 GHz Xiaomi MI Mix 3 5G has higher clock speed than Samsung Galaxy S20 Ultra 5G.
Processor Core Qty - 8-core
64-bit Architecture Yes Yes Both phones have 64-bit architecture.
Graphics System (GPU) Qualcomm ADRENO 640 -
MEMORY Xiaomi MI Mix 3 5G Samsung Galaxy S20 Ultra 5G
RAM LPDDR4X SDRAM - 6 GB LPDDR5 SDRAM - 12 GB Samsung Galaxy S20 Ultra 5G has more RAM than Xiaomi MI Mix 3 5G.
Internal Memory Size (Storage Capacity) 128 GB 128 GB Both phones have the same internal memory capacity.
User Memory - 104 GB
Memory Interface UFS 2.1 -
Supported Flash Memory Cards (Expandable Memory) - microSDHC, microSDXC - up to 1 TB
CAMERA Xiaomi MI Mix 3 5G Samsung Galaxy S20 Ultra 5G
MAIN CAMERA
Number of Main Cameras 2 4
Sensor Resolution 12 Megapixel 108 Megapixel Samsung Galaxy S20 Ultra 5G has better camera resolution than Xiaomi MI Mix 3 5G.
Sensor Size - 1/1.33"
Sensor Name Sony Exmor RS IMX363 sensor -
Lens Type Wide-angle lens Wide-angle lens
Lens Aperture F/1.8 F/1.8 Both phones have the same camera lens aperture.
Field of View (FoV) - 79 degree(s)
Pixel Size 1.4 μm 0.8 μm Xiaomi MI Mix 3 5G has larger camera pixel size than Samsung Galaxy S20 Ultra 5G.
Optical Image Stabiliser (OIS) 4-axis OIS (Optical Image Stabilisation) Optical Image Stabiliser (OIS) Both phones have optical image stabilization.
Focus Adjustment Automatic Automatic, manual
Optical Zoom - 10x
Digital Zoom - 100x
Self-Timer Delay - Yes
Special Effects HDR HDR, Bokeh effect, Grid Line, Motion photos, video bokeh effect
Camera Modes Panorama, Nightscape capture mode, Personalized AI Beautify Panorama, Slow motion mode, Pro mode, HYPERLAPSE, Super Slow-mo, Flowers, Greenery, Trees, Sky, Beaches, Watersides, Snow, Backlit, Text, Food, Face, Baby, Person, Dog, Cat, People, Sunset, Sunrise, City, Waterfall, Scenery, Stage, Vehicles, Drinks, Animal, Shoes, Indoor, Clothes, Night view, Live focus video, Night, Mountain, Pro Video mode, Single Take
Face Recognition (Face ID) Face recognition Face detection Both phones have face detection.
White Balance - Custom, automatic
Light Source Flash High CRI LED flash
Video Resolutions 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1920 x 1080 (1080p) at 120 fps, Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps, Slo-mo video 1280 x 720 (720p) at 120 fps, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1280 x 720 (720p) at 960 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, Super slow motion video 1920 x 1080 (1080p) at 960 fps 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1280 x 720 (720p) at 960 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, 7680 x 4320 (8K) at 24 fps
Camera Features (Functions) AI scene and object detection, Dual Pixel Autofocus technology, AI Dual camera, 4-in-1 Super Pixel, AI scene detection, AI dynamic bokeh, AI studio lighting, AI Super Resolution, low-light enhancement technology, AI special effects Quick Launch, Playback zoom, Phase Detect Auto-Focus (PDAF), blink detection, VDIS (Video Digital Image Stabilisation), Live Focus, Tracking AF, Video location tags, Quick Share, location tags, Hyperlapse video support 1080p, Scene Optimiser, Full view, Flaw detection, Shot suggestions, AR Emoji, blur detection, HDR10+ recording, Floating shutter button, Super steady, Quick Measure, Space Zoom, 33MP still photos while playing 8K video, 100x Super Resolution Zoom, 10x Hybrid Optic Zoom, 3D Scanner
SECOND CAMERA
Sensor Resolution (2nd Camera) 12 Megapixel 12 Megapixel Both phones have the same second camera resolution.
Sensor Name (2nd Camera) Samsung S5K3M3+ -
Lens Type (2nd Camera) - Ultra wide-angle lens
Lens Aperture (2nd Camera) - F/2.2
Field of View (2nd Camera) - 120 degree(s)
Pixel Size (2nd Camera) 1 μm 1.4 μm Samsung Galaxy S20 Ultra 5G has larger second camera pixel size than Xiaomi MI Mix 3 5G.
THIRD CAMERA
Sensor Resolution (3rd Camera) - 48 Megapixels
Lens Type (3rd Camera) - Telephoto lens
Lens Aperture (3rd Camera) - F/3.5
Field of View (3rd Camera) - 24 degree(s)
Pixel Size (3rd Camera) - 0.8 μm
FOURTH CAMERA
Sensor Resolution (4th Camera) - 0.3 Megapixel
Lens Aperture (4th Camera) - F/1.0
Camera Functions (4th Camera) - DepthVision camera
FRONT CAMERA
Number of Front Cameras 2 1
Sensor Resolution (Front) 24 Megapixel 40 Megapixels Samsung Galaxy S20 Ultra 5G has better front camera resolution than Xiaomi MI Mix 3 5G.
Sensor Name (Front) Sony Exmor RS IMX576 sensor -
Lens Aperture (Front) - F/2.2
Field of View (Front) - 80 degree(s)
Pixel Size (Front) 1.8 μm 0.7 μm Xiaomi MI Mix 3 5G has larger front camera pixel size than Samsung Galaxy S20 Ultra 5G.
Focus Adjustment - Automatic
Special Effects (Front) Magic mirror -
HDR Mode (Front) Auto HDR mode -
Camera Modes (Front) Bokeh Mode, AI Beautify, AI makeup -
Face Recognition (Face ID) Face recognition - Xiaomi MI Mix 3 5G has face detection.
Camera Features (Front) AI portrait mode, 4-in-1 Super Pixel technology, Video Beautify, AI scene detection, AI dynamic bokeh, AI studio lighting, AI real-time video background blurring, AI eye light Phase Detect Auto-Focus (PDAF)
SECOND FRONT CAMERA
Sensor Resolution (2nd Front) 2 Megapixel -
Sensor Name (2nd Front) OC0A10 -
Pixel Size (2nd Front) 1.75 μm -
BATTERY AND CHARGING Xiaomi MI Mix 3 5G Samsung Galaxy S20 Ultra 5G
Battery Capacity (Battery Size) 3800 mAh 5000 mAh Samsung Galaxy S20 Ultra 5G has larger battery capacity than Xiaomi MI Mix 3 5G.
Fast Charging Technology Qualcomm Quick Charge 4.0+ Qualcomm Quick Charge 2.0, Adaptive Fast Charging, Samsung Super Fast Charging Both phones have fast charging technology.
Wireless Charging - Yes Samsung Galaxy S20 Ultra 5G can be charged wirelessly.
Wireless Charging Standards - WPC, Qi, Fast Wireless Charging 2.0, Wireless PowerShare
Talk Time - 1500 minutes
Run Time Details - Talk (LTE): up to 1500 min
Active online usage (LTE): up to 17 hrs
Active online usage (Wi-Fi): up to 18 hrs
CELLULAR Xiaomi MI Mix 3 5G Samsung Galaxy S20 Ultra 5G
Technology CDMA2000 1X / GSM / WCDMA (UMTS) / TD-SCDMA WCDMA (UMTS) / GSM
Mobile Broadband Generation 5G 5G Both phones have the same mobile network generation.
Operating System - Android 10
User Interface - Samsung One UI 2
Intelligent Assistant - Bixby
Payment Technology - Samsung Pay
Navigation GPS, GLONASS, BeiDou, Galileo, QZSS GPS, GLONASS, BeiDou, Galileo
COMMUNICATIONS Xiaomi MI Mix 3 5G Samsung Galaxy S20 Ultra 5G
Data Transmission GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE, 5G NR FR1 GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE, 5G NR FR1
2G Band 850 GSM, 900 GSM, 1800 GSM, 1900 GSM, 800 CDMA2000 1X 850 GSM, 900 GSM, 1800 GSM, 1900 GSM
3G UMTS Band Band 1, Band 2, Band 4, Band 5, Band 8 Band 1, Band 2, Band 4, Band 5, Band 8
3G UMTS Frequency 2100, 1900, 1700, 850, 900 2100, 1900, 1700, 850, 900
4G LTE Band Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, Band 28, Band 34, Band 38, Band 39, Band 40, Band 41 Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 17, Band 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 32, Band 38, Band 39, Band 40, Band 41, Band 66
4G LTE Frequency FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2000, TDD 2600, TDD 1900, TDD 2300, TDD 2500 FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3
5G NR Band N78 N1, n3, n5, n7, n8, n28, n77, n78, n40
5G NR Frequency TDD TD 3500 FDD 2100, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 700APT, TDD TD 3700, TDD TD 3500, TDD 2300
Wireless Interface IEEE 802.11a/b/g/n/ac IEEE 802.11a/b/g/n/ac, ANT+/ANT, IEEE 802.11a/b/g/n/ac/ax
Bluetooth Bluetooth 5.0 Bluetooth 5.0
NFC Yes Yes Both phones have an NFC reader for mobile payments.
Messaging Services SMS, MMS SMS, MMS
MEDIA Xiaomi MI Mix 3 5G Samsung Galaxy S20 Ultra 5G
Supported Digital Audio Standards WAV, AAC, PCM, AMR, MP3, FLAC, AAC +, eAAC+, APE (Monkey's Audio), apt-X, AMR-WB, AMR-NB, apt-X HD WAV, WMA, AAC, PCM, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, DSF, DSD, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID, DSD64, DSD128
Supported Digital Video Standards MKV, VC-1, XviD, MPEG-4, H.264, M4V, HEVC, H.265, ASP MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4
Sound Enhancements - Dolby Digital Plus sound, Dolby Atmos sound technology, Surround sound, stereo speakers tuned by AKG, Dolby Digital sound
FEATURES Xiaomi MI Mix 3 5G Samsung Galaxy S20 Ultra 5G
Phone Functions Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert
Sensors Accelerometer, ambient light sensor, digital compass, gyro sensor, vibration sensor, ultrasonic distance sensor Accelerometer, proximity sensor, barometer, gyro sensor, hall sensor, RGB sensor, geomagnetic sensor
Security Devices Face recognition, fingerprint reader Fingerprint reader (under display), face recognition
Additional Phone Features MIMO technology, MU-MIMO technology Smart Select, MU-MIMO technology, Fast Charging, Samsung KNOX, High AOP Mic, Smart View, Live message, Samsung DeX support, Bixby Vision, Secure Folder function, Dual Audio, Bixby Routines, Intelligent Performance Enhancer, AR Doodle, Bixby key, 3D Scanner
OTHERS Xiaomi MI Mix 3 5G Samsung Galaxy S20 Ultra 5G
Included Accessories Protective cover, power adapter, SIM card removal tool, USB-C cable, USB-C to 3.5 jack audio cable Power adapter, SIM card removal tool, USB-C cable, headset (tuned by AKG), clear cover case, protective film
Compliant Standards - VDE, IP68, SGS
Max Depth of Water Resistance - 1.5 m
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