In depth comparison and review of Xiaomi MI 8 and Vivo V21 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.
| DESIGN AND DIMENSIONS | Xiaomi MI 8 | Vivo V21 5G |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | V2050 | |
| Form Factor | Touch | Touch | |
| Height | 154.9 mm | 159.68 mm | Vivo V21 5G has greater height than Xiaomi MI 8. |
| Width | 74.8 mm | 73.9 mm | Xiaomi MI 8 has greater width than Vivo V21 5G. |
| Depth | 7.6 mm | 7.29 mm | Vivo V21 5G is narrower than Xiaomi MI 8. |
| Weight | 175 g | 176 g | Xiaomi MI 8 is lighter than Xiaomi MI 8. |
| Body Colour | Black | Blue | Dusk blue | Sunset dazzle | |
| Body Material | Glass, 7000 Series aluminium | Matte glass | |
| Waterproof (Water-resistant) | - | - | |
| IP rating | - | IP52 | |
| SAR Value | 1.662 W/kg (body), 0.701 W/kg (head) | 1.09 W/kg (body), 3.19 W/kg (limb), 0.91 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 | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM | |
| SIM Card Configuration Details | - | Nano SIM + nano SIM/microSD |
| DISPLAY | Xiaomi MI 8 | Vivo V21 5G |
|---|
| Display Type | OLED display | OLED display | |
|---|---|---|---|
| Display Technology | AMOLED | AMOLED | |
| Screen Size (Display Size) | 6.21" | 6.44" | Vivo V21 5G has larger screen size than Xiaomi MI 8. |
| Screen Resolution (Display Resolution) | 2248 x 1080 pixels | 2404 x 1080 pixels | Vivo V21 5G has better screen resolution than Xiaomi MI 8. |
| Display Format | Full HD+ | Full HD+ | |
| Pixel Density | 402 ppi | - | |
| Aspect Ratio | 18.7:9 | 20:9 | |
| Max Brightness | 600 cd/m² | 800 cd/m² | Vivo V21 5G has better display brightness than Xiaomi MI 8. |
| Contrast Ratio | 60000:1 | 6000000:1 | Vivo V21 5G has better display contrast ratio than Xiaomi MI 8. |
| HDR | - | Yes | Vivo V21 5G has HDR. |
| HDR Technology | - | HDR10+ | |
| Display Enhancement Technology | Sunlight mode | - | |
| Display Refresh Rate | - | 90 Hz | |
| Display Features | Always-on display, Reading mode, Colour temperature adjustment, DCI-P3 Wide colour gamut | - |
| PROCESSOR | Xiaomi MI 8 | Vivo V21 5G |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 845 | MediaTek Dimensity 800U | |
|---|---|---|---|
| Clock Speed | 2.8 GHz | 2.4 GHz | Xiaomi MI 8 has higher clock speed than Vivo V21 5G. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| 64-bit Architecture | Yes | - | Xiaomi MI 8 has 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 630 | - |
| MEMORY | Xiaomi MI 8 | Vivo V21 5G |
|---|
| RAM | LPDDR4X SDRAM - 6 GB | 8 GB | Vivo V21 5G has more RAM than Xiaomi MI 8. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 128 GB | Vivo V21 5G has more internal memory than Xiaomi MI 8. |
| Memory Interface | - | UFS 2.2 | |
| Supported Flash Memory Cards (Expandable Memory) | - | microSDHC, microSD, microSDXC - up to 1 TB |
| CAMERA | Xiaomi MI 8 | Vivo V21 5G |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 2 | 3 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 64 Megapixel | Vivo V21 5G has better camera resolution than Xiaomi MI 8. |
| Sensor Name | Sony Exmor RS IMX363 sensor | - | |
| Lens Type | Wide-angle lens | - | |
| Lens Aperture | F/1.8 | F/1.79 | Vivo V21 5G has better lens aperture than Xiaomi MI 8. |
| Optical Image Stabiliser (OIS) | 4-axis OIS (Optical Image Stabilisation) | 4-axis OIS (Optical Image Stabilisation) | Both phones have optical image stabilization. |
| Focus Adjustment | Automatic | Automatic | |
| Digital Zoom | - | 10x | |
| Special Effects | HDR | Bokeh effect | |
| Camera Modes | Burst mode, Panorama, portrait mode, AR Emoji, AI Beautify | Beauty mode, Night, Filter mode, Portrait video, Dual video mode, ultra stable video, kid's face beauty, double exposure | |
| Face Recognition (Face ID) | Face recognition | - | Xiaomi MI 8 has face detection. |
| Light Source | LED flash | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps | 3840 x 2160 (4K), 1920 x 1080 (1080p) at 120 fps, 1280 x 720 (720p) at 120 fps | |
| Camera Features (Functions) | Dual Pixel Autofocus technology, AI Dual camera, AI scene detection, AI Beautify, AI dynamic bokeh, AI studio lighting, AI short video editing, AI high-res photos | Eye Autofocus |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 12 Megapixel | 8 Megapixel | Xiaomi MI 8 has better second camera resolution than Vivo V21 5G. |
|---|---|---|---|
| Lens Type (2nd Camera) | Telephoto lens | Wide-angle lens | |
| Lens Aperture (2nd Camera) | F/2.4 | F/2.2 | Vivo V21 5G has better second camera lens aperture than Xiaomi MI 8. |
| Field of View (2nd Camera) | - | 120 degree(s) | |
| Camera Features (2nd Camera) | Portrait lens | - |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Lens Aperture (3rd Camera) | - | F/2.4 | |
| Camera Functions (3rd Camera) | - | Super macro camera | |
| Camera Features (3rd Camera) | - | 4cm macro photography |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 2 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 20 Megapixel | 44 Megapixels | Vivo V21 5G has better front camera resolution than Xiaomi MI 8. |
| Lens Aperture (Front) | - | F/2.0 | |
| Special Effects (Front) | Mirror | HDR | |
| Camera Modes (Front) | AR Emoji, AI portrait mode | Beauty mode, Night, Filter mode, Dual video mode, ultra stable video, kid's face beauty, double exposure, AI night portrait | |
| Face Recognition (Face ID) | Face recognition | - | Xiaomi MI 8 has face detection. |
| Light Source (Front) | - | Dual LED flash | |
| Video Resolutions (Front) | - | 3840 x 2160 (4K) | |
| Camera Features (Front) | Self-timer, AI detection of 10 different scenes, 3D Beautify | Optical Image Stabilisation (OIS), 2 x digital zoom, Eye Autofocus |
| SECOND FRONT CAMERA |
|---|
| Camera Features (2nd Front) | Flood Illuminator, Dot Projector | - |
|---|
| BATTERY AND CHARGING | Xiaomi MI 8 | Vivo V21 5G |
|---|
| Battery Capacity (Battery Size) | 3400 mAh | 4000 mAh | Vivo V21 5G has larger battery capacity than Xiaomi MI 8. |
|---|---|---|---|
| Fast Charging Technology | Qualcomm Quick Charge 4.0+ | - | Xiaomi MI 8 has fast charging technology. |
| CELLULAR | Xiaomi MI 8 | Vivo V21 5G |
|---|
| Technology | CDMA2000 1X / GSM / WCDMA (UMTS) / TD-SCDMA | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 5G | Vivo V21 5G has more advanced generation mobile network. |
| Operating System | Android 8.1 Oreo | Funtouch OS 11.1 (based on Android 11) | |
| User Interface | MIUI 9.5 | - | |
| Payment Technology | Android Pay | - | |
| Navigation | GPS, GLONASS, BeiDou, Galileo, QZSS | GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | Xiaomi MI 8 | Vivo V21 5G |
|---|
| Data Transmission | GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | FDD-LTE, TDD-LTE, 5G NR FR1 | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM, 800 CDMA2000 1X, 1900 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 12, Band 17, Band 20, 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 17, Band 18, Band 19, Band 20, 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 700a, FDD 700b, FDD 800 DD, 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 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | |
| 5G NR Band | - | N1, n3, n7, n8, n28, n41, n78, n40 | |
| 5G NR Frequency | - | FDD 2100, FDD 1800, FDD 2600, FDD 900, FDD 700APT, TDD TD 2500, TDD TD 3500, TDD 2300 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | Wi-Fi | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.1 | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | - |
| MEDIA | Xiaomi MI 8 | Vivo V21 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, MPEG 2 Audio, MP3, FLAC, MIDI, APE (Monkey's Audio), Vorbis | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, XviD, MPEG-4, H.264, M4V, HEVC, H.265, ASP | MKV, FLV, 3GP, MP4 |
| FEATURES | Xiaomi MI 8 | Vivo V21 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, proximity sensor, digital compass, barometer, gyro sensor, hall sensor, Time of Flight (ToF), infrared (IR) sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyroscope | |
| Security Devices | Face recognition, fingerprint reader | Fingerprint reader (under display) | |
| Security Technology | IR face unlock | - | |
| Additional Phone Features | Face Unlock, MU-MIMO technology | Fast Charging, 3 GB of external memory space for RAM |
| OTHERS | Xiaomi MI 8 | Vivo V21 5G |
|---|
| Included Accessories | Power adapter, SIM card removal tool, USB-C to 3.5 jack adapter, USB-C cable, Mi 8 Protective cover | Headset, headset adapter, SIM card removal tool, pre-installed screen protection film, USB-C cable, protective case | |
|---|---|---|---|
| Compliant Standards | - | IP52 |
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