Xiaomi MI Mix 3 5G vs. OnePlus 8

Phone Comparison, Reviews and Tests

In depth comparison and review of Xiaomi MI Mix 3 5G and OnePlus 8. 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. OnePlus 8 Comparison Chart
DESIGN AND DIMENSIONS Xiaomi MI Mix 3 5G OnePlus 8
Product Type Smartphone Smartphone
Form Factor Touch slider Touch
Height 157.89 mm 160.2 mm OnePlus 8 has greater height than Xiaomi MI Mix 3 5G.
Width 74.69 mm 72.9 mm Xiaomi MI Mix 3 5G has greater width than OnePlus 8.
Depth 8.46 mm 8 mm OnePlus 8 is narrower than Xiaomi MI Mix 3 5G.
Weight 225 g 180 g OnePlus 8 is lighter than Xiaomi MI Mix 3 5G.
Body Colour Sapphire blue | Onyx black Black | Onyx black | Glacial green
Waterproof (Water-resistant) - -
SAR Value 1.577 W/kg (body), 1.557 W/kg (head) 0.86 W/kg
Connector Type USB Type-C - 24 pin USB-C USB Type-C - 24 pin USB-C
SIM Card Type (Size) - Nano SIM
SIM Card Qty Single-SIM Dual-SIM
DISPLAY Xiaomi MI Mix 3 5G OnePlus 8
Display Type OLED display OLED display
Display Technology AMOLED Fluid Amoled
Screen Size (Display Size) 6.39" 6.55" OnePlus 8 has larger screen size than Xiaomi MI Mix 3 5G.
Screen Resolution (Display Resolution) 2340 x 1080 pixels 2400 x 1080 pixels OnePlus 8 has better screen resolution than Xiaomi MI Mix 3 5G.
Display Format Full HD+ QHD+
Pixel Density 403 ppi 402 ppi Xiaomi MI Mix 3 5G has better pixel density than OnePlus 8.
Aspect Ratio 19.5:9 20:9
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 Features Always-on display, Reading mode, Colour temperature adjustment, night mode Reading mode, night mode, Wide colour display (P3), 90 Hz Fluid Display
Display Protection (Screen Protector) - Corning Gorilla Glass 3D (scratch resistant glass)
PROCESSOR Xiaomi MI Mix 3 5G OnePlus 8
Processor Type (CPU) Qualcomm Snapdragon 855 Qualcomm Snapdragon 865
Clock Speed 2.84 GHz 2.84 GHz Both phones have the same clock speed.
Processor Core Qty - 8-core
64-bit Architecture Yes Yes Both phones have 64-bit architecture.
Graphics System (GPU) Qualcomm ADRENO 640 Qualcomm ADRENO 650
MEMORY Xiaomi MI Mix 3 5G OnePlus 8
RAM LPDDR4X SDRAM - 6 GB LPDDR4X SDRAM - 8 GB OnePlus 8 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 - 100 GB
Memory Interface UFS 2.1 UFS 3.0
CAMERA Xiaomi MI Mix 3 5G OnePlus 8
MAIN CAMERA
Number of Main Cameras 2 3
Sensor Resolution 12 Megapixel 48 Megapixel OnePlus 8 has better camera resolution than Xiaomi MI Mix 3 5G.
Sensor Size - 1/1.4"
Sensor Name Sony Exmor RS IMX363 sensor Sony Exmor RS IMX586 sensor
Lens Type Wide-angle lens -
Lens Aperture F/1.8 F/1.75 OnePlus 8 has better lens aperture than Xiaomi MI Mix 3 5G.
Lens Construction - 6-element
Pixel Size 1.4 μm 0.8 μm Xiaomi MI Mix 3 5G has larger camera pixel size than OnePlus 8.
Optical Image Stabiliser (OIS) 4-axis OIS (Optical Image Stabilisation) Optical Image Stabiliser (OIS) Both phones have optical image stabilization.
Focus Adjustment Automatic Automatic
Laser Auto Focus - Yes
Special Effects HDR Portrait, HDR, Studio
Camera Modes Panorama, Nightscape capture mode, Personalized AI Beautify Panorama, Time-lapse mode, Pro mode, night mode, portrait mode, Cine Video Mode, Dog, Cat, Nightscape capture mode, Portrait, Ultra shot
Face Recognition (Face ID) Face recognition Face detection Both phones have face detection.
Light Source Flash Dual 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 30 fps, 1920 x 1080 (1080p) at 60 fps, 3840 x 2160 (4K) at 30 fps, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1920 x 1080 (1080p) at 240 fps, Super slow motion video 1280 x 720 (720p) at 480 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 Noise reduction, GIF animation function, Phase Detect Auto-Focus (PDAF), Electronic Image Stabiliser (EIS), Continuous Auto Focus (CAF), RAW image capture, AI scene detection, UltraShot engine
SECOND CAMERA
Sensor Resolution (2nd Camera) 12 Megapixel 2 Megapixel Xiaomi MI Mix 3 5G has better second camera resolution than OnePlus 8.
Sensor Name (2nd Camera) Samsung S5K3M3+ -
Lens Aperture (2nd Camera) - F/2.4
Pixel Size (2nd Camera) 1 μm 1.75 μm OnePlus 8 has larger second camera pixel size than Xiaomi MI Mix 3 5G.
THIRD CAMERA
Sensor Resolution (3rd Camera) - 16 Megapixel
Lens Type (3rd Camera) - Ultra wide-angle lens
Lens Aperture (3rd Camera) - F/2.2
Field of View (3rd Camera) - 116 degree(s)
FRONT CAMERA
Number of Front Cameras 2 1
Sensor Resolution (Front) 24 Megapixel 16 Megapixel Xiaomi MI Mix 3 5G has better front camera resolution than OnePlus 8.
Sensor Name (Front) Sony Exmor RS IMX576 sensor Sony Exmor RX IMX471 sensor
Lens Aperture (Front) - F/2.45
Pixel Size (Front) 1.8 μm 1 μm Xiaomi MI Mix 3 5G has larger front camera pixel size than OnePlus 8.
Focus Adjustment - Focus free
Special Effects (Front) Magic mirror HDR, face retouch
HDR Mode (Front) Auto HDR mode -
Camera Modes (Front) Bokeh Mode, AI Beautify, AI makeup Time-lapse mode
Face Recognition (Face ID) Face recognition - Xiaomi MI Mix 3 5G has face detection.
Light Source (Front) - Display flash
Video Resolutions (Front) - 1920 x 1080 (1080p) at 30 fps
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 Electronic Image Stabiliser (EIS)
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 OnePlus 8
Battery Capacity (Battery Size) 3800 mAh 4300 mAh OnePlus 8 has larger battery capacity than Xiaomi MI Mix 3 5G.
Fast Charging Technology Qualcomm Quick Charge 4.0+ Warp Charge 30 technology, Warp Charge 30T technology Both phones have fast charging technology.
Talk Time - 1740 minutes
Run Time Details - Talk: up to 1740 min
Standby: up to 391 hrs
Battery Technology - Lithium Ion
CELLULAR Xiaomi MI Mix 3 5G OnePlus 8
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 - OxygenOS (based on Android 10)
Navigation GPS, GLONASS, BeiDou, Galileo, QZSS GPS, A-GPS, GLONASS, BeiDou, Galileo
COMMUNICATIONS Xiaomi MI Mix 3 5G OnePlus 8
Data Transmission GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE, 5G NR FR1 GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE, LTE Advanced, 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, Band 9, Band 19
3G UMTS Frequency 2100, 1900, 1700, 850, 900 2100, 1900, 1700, 850, 900, 1700, 800
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 34, Band 38, Band 39, Band 40, Band 41, Band 42, Band 46, 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 2000, TDD 2600, TDD 1900, TDD 2300, TDD 2500, TDD 3500, TDD 5150, FDD 1700 - 2110 AWS-3
5G NR Band N78 N1, n3, n7, n28, n78
5G NR Frequency TDD TD 3500 FDD 2100, FDD 1800, FDD 2600, FDD 700APT, TDD TD 3500
Wireless Interface IEEE 802.11a/b/g/n/ac IEEE 802.11a/b/g/n/ac, IEEE 802.11a/b/g/n/ac/ax
Bluetooth Bluetooth 5.0 Bluetooth 5.1
NFC Yes Yes Both phones have an NFC reader for mobile payments.
Modem - Snapdragon X55 5G
Messaging Services SMS, MMS SMS, MMS
MEDIA Xiaomi MI Mix 3 5G OnePlus 8
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, MP3, FLAC, AC-3, AAC +, OGG, APE (Monkey's Audio), M4A, apt-X, LDAC, IMY, EAC3, MID, AMR-WB, AMR-NB, SBC, apt-X HD, EAC3-JOC, AC-4
Supported Digital Video Standards MKV, VC-1, XviD, MPEG-4, H.264, M4V, HEVC, H.265, ASP MKV, FLV, AVI, MOV, WMV, 3GP, TS, WebM, H.265 HEVC, MP4
Sound Enhancements - Qualcomm aptX audio, Qualcomm aptX HD audio, Dolby Atmos Surround Sound
FEATURES Xiaomi MI Mix 3 5G OnePlus 8
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, ambient light sensor, proximity sensor, digital compass, gyro sensor
Security Devices Face recognition, fingerprint reader Fingerprint reader (under display), face recognition
Additional Phone Features MIMO technology, MU-MIMO technology Face Unlock, Noise Cancellation Technology, MIMO technology, Alert Slider
OTHERS Xiaomi MI Mix 3 5G OnePlus 8
Included Accessories Protective cover, power adapter, SIM card removal tool, USB-C cable, USB-C to 3.5 jack audio cable SIM card removal tool, sticker, screen protector, USB-C cable, protective case, Warp Charge 30 power adapter
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