In depth comparison and review of ASUS ZenFone 3 Ultra (ZU680KL) and Xiaomi MI 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.
| DESIGN AND DIMENSIONS | ASUS ZenFone 3 Ultra (ZU680KL) | Xiaomi MI 8 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | ZU680KL | - | |
| Form Factor | Touch | Touch | |
| Height | 186.4 mm | 154.9 mm | ASUS ZenFone 3 Ultra (ZU680KL) has greater height than Xiaomi MI 8. |
| Width | 93.9 mm | 74.8 mm | ASUS ZenFone 3 Ultra (ZU680KL) has greater width than Xiaomi MI 8. |
| Depth | 6.8 mm | 7.6 mm | ASUS ZenFone 3 Ultra (ZU680KL) is narrower than ASUS ZenFone 3 Ultra (ZU680KL). |
| Weight | 233 g | 175 g | Xiaomi MI 8 is lighter than ASUS ZenFone 3 Ultra (ZU680KL). |
| Body Colour | Rose gold | Titanium grey | Glacier silver | Black | Blue | |
| Body Material | Metal | Glass, 7000 Series aluminium | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | - | 1.662 W/kg (body), 0.701 W/kg (head) | |
| Integrated Components | FM radio | - | |
| Connector Type | HDMI - 19 pin micro HDMI Type D 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 | ASUS ZenFone 3 Ultra (ZU680KL) | Xiaomi MI 8 |
|---|
| Display Type | LCD display | OLED display | |
|---|---|---|---|
| Display Technology | IPS | AMOLED | |
| Screen Size (Display Size) | 6.8" | 6.21" | ASUS ZenFone 3 Ultra (ZU680KL) has larger screen size than Xiaomi MI 8. |
| Screen Resolution (Display Resolution) | 1920 x 1080 pixels | 2248 x 1080 pixels | Xiaomi MI 8 has better screen resolution than ASUS ZenFone 3 Ultra (ZU680KL). |
| Display Format | Full HD | Full HD+ | |
| Pixel Density | - | 402 ppi | |
| Aspect Ratio | - | 18.7:9 | |
| Max Brightness | - | 600 cd/m² | |
| Contrast Ratio | - | 60000:1 | |
| Display Enhancement Technology | Bluelight Filter for Eye Care | Sunlight mode | |
| Display Features | Full Lamination, ASUS Tru2Life+ | Always-on display, Reading mode, Colour temperature adjustment, DCI-P3 Wide colour gamut | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 4 (scratch resistant glass) | - |
| PROCESSOR | ASUS ZenFone 3 Ultra (ZU680KL) | Xiaomi MI 8 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 652 | Qualcomm Snapdragon 845 | |
|---|---|---|---|
| Clock Speed | 1.8 GHz | 2.8 GHz | Xiaomi MI 8 has higher clock speed than ASUS ZenFone 3 Ultra (ZU680KL). |
| Processor Core Qty | Quad-core | 8-core | Xiaomi MI 8 has higher processor core quantity than ASUS ZenFone 3 Ultra (ZU680KL). |
| 64-bit Architecture | Yes | Yes | Both phones have 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 510 | Qualcomm ADRENO 630 |
| MEMORY | ASUS ZenFone 3 Ultra (ZU680KL) | Xiaomi MI 8 |
|---|
| RAM | 3 GB | LPDDR4X SDRAM - 6 GB | Xiaomi MI 8 has more RAM than ASUS ZenFone 3 Ultra (ZU680KL). |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 64 GB | Xiaomi MI 8 has more internal memory than ASUS ZenFone 3 Ultra (ZU680KL). |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 200 GB | - |
| CAMERA | ASUS ZenFone 3 Ultra (ZU680KL) | Xiaomi MI 8 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 2 | |
|---|---|---|---|
| Sensor Resolution | 23 Megapixel | 12 Megapixel | ASUS ZenFone 3 Ultra (ZU680KL) has better camera resolution than Xiaomi MI 8. |
| Sensor Name | - | Sony Exmor RS IMX363 sensor | |
| Lens Type | - | Wide-angle lens | |
| Lens Aperture | F/2.0 | F/1.8 | Xiaomi MI 8 has better lens aperture than ASUS ZenFone 3 Ultra (ZU680KL). |
| Lens Construction | 6-element | - | |
| Optical Image Stabiliser (OIS) | 4 Stop OIS (Optical Image Stabilisation) | 4-axis OIS (Optical Image Stabilisation) | Both phones have optical image stabilization. |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | Yes | - | |
| Special Effects | Depth of field | HDR | |
| HDR Mode | Auto HDR mode | - | |
| Camera Modes | Panorama, Time-lapse mode, night mode, manual mode, Real time beauty mode, super resolution mode, All Smiles mode, Mini mode | Burst mode, Panorama, portrait mode, AR Emoji, AI Beautify | |
| Face Recognition (Face ID) | - | Face recognition | Xiaomi MI 8 has face detection. |
| Light Source | Dual LED flash | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) | 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 | |
| Camera Features (Functions) | Sapphire crystal lens cover, GIF animation function, Phase Detect Auto-Focus (PDAF), ZenMotion, Smart Remove, Electronic Image Stabiliser (EIS), MiniMovie, Time Rewind | 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 |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 12 Megapixel | |
|---|---|---|---|
| Lens Type (2nd Camera) | - | Telephoto lens | |
| Lens Aperture (2nd Camera) | - | F/2.4 | |
| Camera Features (2nd Camera) | - | Portrait lens |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 2 | |
|---|---|---|---|
| Sensor Resolution (Front) | 8 Megapixel | 20 Megapixel | Xiaomi MI 8 has better front camera resolution than ASUS ZenFone 3 Ultra (ZU680KL). |
| Lens Type (Front) | Wide-angle lens | - | |
| Lens Aperture (Front) | F/2.0 | - | |
| Focus Adjustment | Focus free | - | |
| Special Effects (Front) | - | Mirror | |
| HDR Mode (Front) | Auto HDR mode | - | |
| Camera Modes (Front) | Slow motion video, night mode, selfie panorama | AR Emoji, AI portrait mode | |
| Face Recognition (Face ID) | - | Face recognition | Xiaomi MI 8 has face detection. |
| Camera Features (Front) | PixelMaster camera | Self-timer, AI detection of 10 different scenes, 3D Beautify |
| SECOND FRONT CAMERA |
|---|
| Camera Features (2nd Front) | - | Flood Illuminator, Dot Projector |
|---|
| BATTERY AND CHARGING | ASUS ZenFone 3 Ultra (ZU680KL) | Xiaomi MI 8 |
|---|
| Battery Capacity (Battery Size) | 4600 mAh | 3400 mAh | ASUS ZenFone 3 Ultra (ZU680KL) has larger battery capacity than Xiaomi MI 8. |
|---|---|---|---|
| Fast Charging Technology | - | Qualcomm Quick Charge 4.0+ | Xiaomi MI 8 has fast charging technology. |
| Talk Time | 2040 minutes | - | |
| Run Time Details | Talk: up to 2040 min Continuous browsing (Wi-Fi): up to 14.5 hrs Playback (video): up to 12.5 hrs |
- | |
| Battery Technology | Lithium | - |
| CELLULAR | ASUS ZenFone 3 Ultra (ZU680KL) | Xiaomi MI 8 |
|---|
| Technology | WCDMA (UMTS) / GSM | CDMA2000 1X / GSM / WCDMA (UMTS) / TD-SCDMA | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 6.0 (Marshmallow) | Android 8.1 Oreo | |
| User Interface | ASUS ZenUI 3.0 | MIUI 9.5 | |
| Payment Technology | - | Android Pay | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, GLONASS, BeiDou, Galileo, QZSS |
| COMMUNICATIONS | ASUS ZenFone 3 Ultra (ZU680KL) | Xiaomi MI 8 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM, 800 CDMA2000 1X, 1900 CDMA2000 1X | |
| 3G UMTS Band | - | Band 1, Band 2, Band 4, Band 5, Band 8 | |
| 3G UMTS Frequency | - | 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 | |
| 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 | |
| Wireless Interface | Infrared (IrDA), IEEE 802.11b/g/n/ac | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 4.2 | Bluetooth 5.0 | |
| Bluetooth Profiles | A2DP | - | |
| NFC | - | Yes | Xiaomi MI 8 has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | ASUS ZenFone 3 Ultra (ZU680KL) | Xiaomi MI 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 | |
|---|---|---|---|
| Supported Digital Video Standards | - | MKV, XviD, MPEG-4, H.264, M4V, HEVC, H.265, ASP |
| FEATURES | ASUS ZenFone 3 Ultra (ZU680KL) | Xiaomi MI 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, proximity sensor, digital compass, gyro sensor, hall sensor, RGB sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass, barometer, gyro sensor, hall sensor, Time of Flight (ToF), infrared (IR) sensor | |
| Security Devices | Fingerprint reader | Face recognition, fingerprint reader | |
| Security Technology | - | IR face unlock | |
| Additional Phone Features | QuickMemo function, Wi-Fi Miracast, Kids Mode, ASUS TruVivid technology, Power Saving Mode, Hi-Res Audio, ASUS BoostMaster technology, ASUS WebStorage (5GB), Google Drive Storage (100 GB) (free for 2 years), VisualMaster 3.0, DTS Headphone:X, ASUS SonicMaster 3.0 technology | Face Unlock, MU-MIMO technology |
| OTHERS | ASUS ZenFone 3 Ultra (ZU680KL) | Xiaomi MI 8 |
|---|
| Included Accessories | Power adapter | Power adapter, SIM card removal tool, USB-C to 3.5 jack adapter, USB-C cable, Mi 8 Protective cover |
|---|
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