In depth comparison and review of ASUS ZenFone Zoom (ZX551ML) and Xiaomi MI 9. 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 Zoom (ZX551ML) | Xiaomi MI 9 |
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Product Type | Smartphone | Smartphone | |
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Manufacturer Model Number | ZX551ML | - | |
Form Factor | Touch | Touch | |
Height | 158.9 mm | 157.5 mm | ASUS ZenFone Zoom (ZX551ML) has greater height than Xiaomi MI 9. |
Width | 78.8 mm | 74.67 mm | ASUS ZenFone Zoom (ZX551ML) has greater width than Xiaomi MI 9. |
Depth | 12 mm | 7.61 mm | Xiaomi MI 9 is narrower than ASUS ZenFone Zoom (ZX551ML). |
Weight | 185 g | 173 g | Xiaomi MI 9 is lighter than ASUS ZenFone Zoom (ZX551ML). |
Body Colour | Ceramic white | Pure black | Ocean blue | Piano black | |
Body Material | - | Curved glass | |
Waterproof (Water-resistant) | - | - | |
SAR Value | 0.432 W/kg (body), 0.343 W/kg (head) | 1.301 W/kg (body), 1.389 W/kg (head) | |
Connector Type | Headset jack - mini-phone 3.5mm Micro-USB - 5 pin Micro-USB Type B |
USB Type-C - 24 pin USB-C | |
SIM Card Type (Size) | Micro SIM | Nano SIM | |
SIM Card Qty | - | Dual-SIM |
DISPLAY | ASUS ZenFone Zoom (ZX551ML) | Xiaomi MI 9 |
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Display Type | LCD display | OLED display | |
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Display Technology | IPS | AMOLED | |
Screen Size (Display Size) | 5.5" | 6.39" | Xiaomi MI 9 has larger screen size than ASUS ZenFone Zoom (ZX551ML). |
Screen Resolution (Display Resolution) | 1920 x 1080 pixels | 2340 x 1080 pixels | Xiaomi MI 9 has better screen resolution than ASUS ZenFone Zoom (ZX551ML). |
Display Format | Full HD | Full HD+ | |
Pixel Density | 401 ppi | 403 ppi | Xiaomi MI 9 has better pixel density than ASUS ZenFone Zoom (ZX551ML). |
Max Brightness | - | 600 cd/m² | |
Colour Depth | 16.7 million colours | - | |
Contrast Ratio | - | 60000:1 | |
HDR | - | Yes | Xiaomi MI 9 has HDR. |
HDR Technology | - | HDR10 | |
Display Enhancement Technology | - | Sunshine mode 2.0 | |
Display Features | - | Always-on display, Reading mode, Colour temperature adjustment, night mode, Wide Colour Gamut (WCG) | |
Display Protection (Screen Protector) | Corning Gorilla Glass 4 (scratch resistant glass) | Fingerprint-resistant coating, Corning Gorilla Glass 6 (scratch resistant glass), oil protective coating |
PROCESSOR | ASUS ZenFone Zoom (ZX551ML) | Xiaomi MI 9 |
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Processor Type (CPU) | Intel Atom | Qualcomm Snapdragon 855 | |
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Processor Number | Z3590 | - | |
Clock Speed | 2.5 GHz | 2.84 GHz | Xiaomi MI 9 has higher clock speed than ASUS ZenFone Zoom (ZX551ML). |
Processor Core Qty | Quad-core | 8-core | Xiaomi MI 9 has higher processor core quantity than ASUS ZenFone Zoom (ZX551ML). |
64-bit Architecture | - | Yes | Xiaomi MI 9 has 64-bit architecture. |
Graphics System (GPU) | PowerVR G6430 | Qualcomm ADRENO 640 |
MEMORY | ASUS ZenFone Zoom (ZX551ML) | Xiaomi MI 9 |
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RAM | 4 GB | LPDDR4X SDRAM - 6 GB | Xiaomi MI 9 has more RAM than ASUS ZenFone Zoom (ZX551ML). |
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Internal Memory Size (Storage Capacity) | 32 GB | 64 GB | Xiaomi MI 9 has more internal memory than ASUS ZenFone Zoom (ZX551ML). |
Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 128 GB | - |
CAMERA | ASUS ZenFone Zoom (ZX551ML) | Xiaomi MI 9 |
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MAIN CAMERA |
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Number of Main Cameras | 1 | 3 | |
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Sensor Resolution | 13 Megapixel | 48 Megapixel | Xiaomi MI 9 has better camera resolution than ASUS ZenFone Zoom (ZX551ML). |
Sensor Name | - | Sony Exmor RS IMX586 sensor | |
Lens Type | - | Ultra wide-angle lens | |
Lens Aperture | F/2.7-4.8 | F/1.75 | Xiaomi MI 9 has better lens aperture than ASUS ZenFone Zoom (ZX551ML). |
Pixel Size | - | 0.8 μm | |
Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | - | ASUS ZenFone Zoom (ZX551ML) has optical stabilisation. |
Focus Adjustment | Automatic | Automatic | |
Laser Auto Focus | Yes | Yes | |
Optical Zoom | - | 2x | |
Digital Zoom | 3x | 10x | Xiaomi MI 9 has better digital zoom than ASUS ZenFone Zoom (ZX551ML). |
Special Effects | - | HDR | |
HDR Mode | Auto HDR mode | - | |
Camera Modes | Panorama | Burst mode, Panorama, portrait mode, AI Beautify, Smart ultra-wide angle mode, Ultra nightscape mode, Photo timer, Level display, Custom watermark, Full body portrait mode, Moon mode | |
Face Recognition (Face ID) | Face detection | Face recognition | Both phones have face detection. |
Light Source | Dual LED flash | Dual flash | |
Still Image Resolutions | - | 8000 x 6000 | |
Video Resolutions | 1920 x 1080 (1080p) | 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, Slo-mo video 1920 x 1080 (1080p) at 240 fps, Slo-mo video 1920 x 1080 (1080p) at 960 fps, Slo-mo video 1280 x 720 (720p) at 960 fps | |
Camera Features (Functions) | - | Sapphire crystal lens cover, Phase Detect Auto-Focus (PDAF), Dynamic photos, video stabilisation, Contrast Auto-Focus, AI scene detection, AI studio lighting, Video Beautify, AI Triple camera, 960 fps Smart audio pairing, AI lens flare, AI high resolution photos, Portrait mode background blur adjustment, Ultra wide-angle edge distortion correction, Group photo face correction, Portrait mode background blurring, Motion tracking, Quick motion |
SECOND CAMERA |
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Sensor Resolution (2nd Camera) | - | 12 Megapixel | |
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Lens Type (2nd Camera) | - | Telephoto lens | |
Lens Aperture (2nd Camera) | - | F/2.2 | |
Pixel Size (2nd Camera) | - | 1 μm | |
Camera Features (2nd Camera) | - | Macro photography |
THIRD CAMERA |
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Sensor Resolution (3rd Camera) | - | 16 Megapixel | |
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Lens Type (3rd Camera) | - | Ultra wide-angle lens | |
Lens Aperture (3rd Camera) | - | F/2.2 | |
Pixel Size (3rd Camera) | - | 1 μm |
FRONT CAMERA |
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Number of Front Cameras | 1 | 1 | |
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Sensor Resolution (Front) | 5 Megapixel | 20 Megapixel | Xiaomi MI 9 has better front camera resolution than ASUS ZenFone Zoom (ZX551ML). |
Lens Aperture (Front) | F/2.0 | F/2.0 | Both phones have the same front camera lens aperture. |
Pixel Size (Front) | - | 0.9 μm | |
Special Effects (Front) | - | HDR, Magic mirror | |
Camera Modes (Front) | - | AI portrait mode, AI Beautify, AI makeup | |
Face Recognition (Face ID) | - | Face recognition | Xiaomi MI 9 has face detection. |
Video Resolutions (Front) | - | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
Camera Features (Front) | - | Self-timer, age recognition, Video Beautify, AI scene detection, AI studio lighting, Eye light, AI feature adjustment, AI lens flare |
BATTERY AND CHARGING | ASUS ZenFone Zoom (ZX551ML) | Xiaomi MI 9 |
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Battery Capacity (Battery Size) | 3000 mAh | 3300 mAh | Xiaomi MI 9 has larger battery capacity than ASUS ZenFone Zoom (ZX551ML). |
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Fast Charging Technology | - | Qualcomm Quick Charge 4.0+ | Xiaomi MI 9 has fast charging technology. |
Wireless Charging Standards | - | WPC, Qi | |
Battery Technology | Lithium polymer | - |
CELLULAR | ASUS ZenFone Zoom (ZX551ML) | Xiaomi MI 9 |
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Technology | WCDMA (UMTS) / GSM | CDMA2000 1X / GSM / WCDMA (UMTS) / TD-SCDMA | |
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Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
Operating System | Android 5.0 (Lollipop) | - | |
User Interface | ASUS ZenUI 2.0 | MIUI 10 | |
Intelligent Assistant | - | Google Assistant | |
Payment Technology | - | Android Pay | |
Navigation | A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou, Galileo |
COMMUNICATIONS | ASUS ZenFone Zoom (ZX551ML) | Xiaomi MI 9 |
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Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE | |
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2G Band | 850 GSM, 1800 GSM, 1900 GSM | - | |
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 5, Band 7, Band 8, Band 9, Band 18, Band 19, Band 28 | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 20, Band 28, Band 38, Band 39, Band 40 | |
4G LTE Frequency | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 1800, FDD 800 lower, FDD 800 upper, FDD 700 APT | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 1900, TDD 2300 | |
Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac | |
Bluetooth | Bluetooth 4.0 | Bluetooth 5.0 | |
Bluetooth Profiles | A2DP | - | |
NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
WLAN Security | - | WPA3 | |
Messaging Services | SMS, MMS | SMS, MMS |
MEDIA | ASUS ZenFone Zoom (ZX551ML) | Xiaomi MI 9 |
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Supported Digital Audio Standards | - | WAV, AAC, AMR, MP3, FLAC, apt-X, LDAC, apt-X HD | |
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Supported Digital Video Standards | - | MKV, VC-1, XviD, MPEG-4, H.264, M4V, HEVC, VP8, VP9 | |
Sound Enhancements | - | Qualcomm TrueWireless Stereo Plus |
FEATURES | ASUS ZenFone Zoom (ZX551ML) | Xiaomi MI 9 |
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Phone Functions | Speakerphone, call timer, conference call, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
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Sensors | Accelerometer, proximity sensor, digital compass, gyro sensor | Accelerometer, ambient light sensor, digital compass, gyro sensor, ultrasonic proximity sensor, linear rotation vector sensor | |
Security Devices | - | Fingerprint reader (under display) | |
Additional Phone Features | Multitasking | Infrared remote control, MIMO technology, MU-MIMO technology, MI Turbo, GAME Turbo |
OTHERS | ASUS ZenFone Zoom (ZX551ML) | Xiaomi MI 9 |
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Included Accessories | Power adapter | Protective cover, SIM card removal tool, USB-C cable, USB-C audio adapter, 18W QC3.0 charger | |
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Compliant Standards | - | TUV Rheinland Certified Safe Fast-Charge System |