In depth comparison and review of ASUS ZenFone Zoom (ZX551ML) and Xiaomi Redmi Note 9 Pro. 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 Redmi Note 9 Pro |
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Product Type | Smartphone | Smartphone | |
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Manufacturer Model Number | ZX551ML | - | |
Form Factor | Touch | Touch | |
Height | 158.9 mm | 165.75 mm | Xiaomi Redmi Note 9 Pro has greater height than ASUS ZenFone Zoom (ZX551ML). |
Width | 78.8 mm | 76.68 mm | ASUS ZenFone Zoom (ZX551ML) has greater width than Xiaomi Redmi Note 9 Pro. |
Depth | 12 mm | 8.8 mm | Xiaomi Redmi Note 9 Pro is narrower than ASUS ZenFone Zoom (ZX551ML). |
Weight | 185 g | 209 g | ASUS ZenFone Zoom (ZX551ML) is lighter than ASUS ZenFone Zoom (ZX551ML). |
Body Colour | Ceramic white | Pure black | Interstellar grey | Tropical green | |
Body Material | - | Curved 3D glass, Gorilla glass 5 | |
Protection | - | Splashproof | |
Waterproof (Water-resistant) | - | - | |
SAR Value | 0.432 W/kg (body), 0.343 W/kg (head) | 2.07 W/kg (limb), 1.021 W/kg (body), 0.662 W/kg (head) | |
Integrated Components | - | Ultra-linear speaker | |
Connector Type | Headset jack - mini-phone 3.5mm Micro-USB - 5 pin Micro-USB Type B |
USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
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SIM Card Type (Size) | Micro SIM | Nano SIM | |
SIM Card Qty | - | Dual-SIM |
DISPLAY | ASUS ZenFone Zoom (ZX551ML) | Xiaomi Redmi Note 9 Pro |
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Display Type | LCD display | LCD display | |
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Display Technology | IPS | - | |
Screen Size (Display Size) | 5.5" | 6.67" | Xiaomi Redmi Note 9 Pro has larger screen size than ASUS ZenFone Zoom (ZX551ML). |
Screen Resolution (Display Resolution) | 1920 x 1080 pixels | 2400 x 1080 pixels | Xiaomi Redmi Note 9 Pro has better screen resolution than ASUS ZenFone Zoom (ZX551ML). |
Display Format | Full HD | Full HD+ | |
Pixel Density | 401 ppi | - | |
Max Brightness | - | 450 cd/m² | |
Colour Depth | 16.7 million colours | - | |
Contrast Ratio | - | 1500:1 | |
Display Features | - | Reading mode 2.0, Dot Display | |
Display Protection (Screen Protector) | Corning Gorilla Glass 4 (scratch resistant glass) | Corning Gorilla Glass 5 (scratch resistant glass) |
PROCESSOR | ASUS ZenFone Zoom (ZX551ML) | Xiaomi Redmi Note 9 Pro |
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Processor Type (CPU) | Intel Atom | Qualcomm Snapdragon 720G | |
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Processor Number | Z3590 | - | |
Clock Speed | 2.5 GHz | 2.3 GHz | ASUS ZenFone Zoom (ZX551ML) has higher clock speed than Xiaomi Redmi Note 9 Pro. |
Processor Core Qty | Quad-core | 8-core | Xiaomi Redmi Note 9 Pro has higher processor core quantity than ASUS ZenFone Zoom (ZX551ML). |
64-bit Architecture | - | Yes | Xiaomi Redmi Note 9 Pro has 64-bit architecture. |
Graphics System (GPU) | PowerVR G6430 | Qualcomm ADRENO 618 |
MEMORY | ASUS ZenFone Zoom (ZX551ML) | Xiaomi Redmi Note 9 Pro |
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RAM | 4 GB | 6 GB | Xiaomi Redmi Note 9 Pro has more RAM than ASUS ZenFone Zoom (ZX551ML). |
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Internal Memory Size (Storage Capacity) | 32 GB | 64 GB | Xiaomi Redmi Note 9 Pro has more internal memory than ASUS ZenFone Zoom (ZX551ML). |
Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 128 GB | microSDHC, microSDXC - up to 512 GB |
CAMERA | ASUS ZenFone Zoom (ZX551ML) | Xiaomi Redmi Note 9 Pro |
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MAIN CAMERA |
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Number of Main Cameras | 1 | 4 | |
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Sensor Resolution | 13 Megapixel | 64 Megapixel | Xiaomi Redmi Note 9 Pro has better camera resolution than ASUS ZenFone Zoom (ZX551ML). |
Sensor Size | - | 1/1.72" | |
Lens Aperture | F/2.7-4.8 | F/1.89 | Xiaomi Redmi Note 9 Pro has better lens aperture than ASUS ZenFone Zoom (ZX551ML). |
Lens Construction | - | 6-element | |
Field of View (FoV) | - | 79.8 degree(s) | |
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 | - | |
Digital Zoom | 3x | - | |
Special Effects | - | HDR, Kaleidoscope | |
HDR Mode | Auto HDR mode | - | |
Camera Modes | Panorama | Burst mode, Panorama, night mode, Smart ultra-wide angle mode, Photo timer, Custom watermark, Documents, Beautify, Levelling, Cinematic portraits | |
Face Recognition (Face ID) | Face detection | Face recognition | Both phones have face detection. |
Light Source | Dual LED flash | 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, Slo-mo video 1280 x 720 (720p) at 960 fps | |
Camera Features (Functions) | - | 4-in-1 Super Pixel, AI scene detection, Portrait mode with background blurring, Ultra wide-angle edge distortion correction, AI Quad camera, Steady handheld night photography, full screen frame, AI watermark |
SECOND CAMERA |
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Sensor Resolution (2nd Camera) | - | 8 Megapixel | |
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Sensor Size (2nd Camera) | - | 1/4" | |
Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
Lens Aperture (2nd Camera) | - | F/2.2 | |
Lens Element Qty (2nd Camera) | - | 5-element | |
Field of View (2nd Camera) | - | 119 degree(s) | |
Pixel Size (2nd Camera) | - | 1.12 μm | |
Camera Features (2nd Camera) | - | 5-piece lens |
THIRD CAMERA |
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Sensor Resolution (3rd Camera) | - | 5 Megapixel | |
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Sensor Size (3rd Camera) | - | 1/5" | |
Lens Aperture (3rd Camera) | - | F/2.4 | |
Pixel Size (3rd Camera) | - | 1.12 μm | |
Camera Functions (3rd Camera) | - | Macro camera | |
Camera Features (3rd Camera) | - | AF (2cm-10cm) |
FOURTH CAMERA |
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Sensor Resolution (4th Camera) | - | 2 Megapixel | |
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Sensor Size (4th Camera) | - | 1/5" | |
Lens Aperture (4th Camera) | - | F/2.4 | |
Pixel Size (4th Camera) | - | 1.75 μm | |
Camera Functions (4th Camera) | - | Depth camera |
FRONT CAMERA |
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Number of Front Cameras | 1 | 1 | |
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Sensor Resolution (Front) | 5 Megapixel | 16 Megapixel | Xiaomi Redmi Note 9 Pro has better front camera resolution than ASUS ZenFone Zoom (ZX551ML). |
Sensor Size (Front) | - | 1/3.06" | |
Lens Aperture (Front) | F/2.0 | F/2.48 | ASUS ZenFone Zoom (ZX551ML) has better front lens aperture than ASUS ZenFone Zoom (ZX551ML). |
Field of View (Front) | - | 82.4 degree(s) | |
Pixel Size (Front) | - | 1 μm | |
Special Effects (Front) | - | HDR | |
Camera Modes (Front) | - | Panoramic selfies, AI portrait mode, AI Beautify, Slo-mo Selfie | |
Face Recognition (Face ID) | - | Face recognition | Xiaomi Redmi Note 9 Pro has face detection. |
Light Source (Front) | - | Display flash | |
Camera Features (Front) | - | AI scene detection, Palm shutter, AI silhouette detection |
BATTERY AND CHARGING | ASUS ZenFone Zoom (ZX551ML) | Xiaomi Redmi Note 9 Pro |
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Battery Capacity (Battery Size) | 3000 mAh | 5020 mAh | Xiaomi Redmi Note 9 Pro has larger battery capacity than ASUS ZenFone Zoom (ZX551ML). |
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Fast Charging Technology | - | Qualcomm Quick Charge 4.0 | Xiaomi Redmi Note 9 Pro has fast charging technology. |
Talk Time | - | 1980 minutes | |
Run Time Details | - | Talk: up to 1980 min Gaming: up to 13 hrs Playback (Music): up to 147 hrs Navigation: up to 16 hrs |
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Battery Technology | Lithium polymer | Lithium Ion |
CELLULAR | ASUS ZenFone Zoom (ZX551ML) | Xiaomi Redmi Note 9 Pro |
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Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
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Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
Operating System | Android 5.0 (Lollipop) | Android 10 | |
User Interface | ASUS ZenUI 2.0 | MIUI 11 | |
Payment Technology | - | Google Pay | |
Navigation | A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou, Galileo |
COMMUNICATIONS | ASUS ZenFone Zoom (ZX551ML) | Xiaomi Redmi Note 9 Pro |
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Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE | |
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2G Band | 850 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1900 GSM, 2100 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 20, Band 28, Band 38, Band 40, Band 41 | |
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 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | |
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. |
Messaging Services | SMS, MMS | SMS, MMS |
MEDIA | ASUS ZenFone Zoom (ZX551ML) | Xiaomi Redmi Note 9 Pro |
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Supported Digital Audio Standards | - | WAV, AAC, AMR, MP3, FLAC, APE (Monkey's Audio) | |
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Supported Digital Video Standards | - | MKV, XviD, M4V, MP4 | |
Audio Amplifier | - | Smart PA |
FEATURES | ASUS ZenFone Zoom (ZX551ML) | Xiaomi Redmi Note 9 Pro |
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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, digital compass, gyro sensor, distance sensor, infrared (IR) sensor, In-screen ambient light sensor | |
Security Devices | - | Face recognition, fingerprint reader (side) | |
Additional Phone Features | Multitasking | Infrared remote control, AI face unlock, Qualcomm 5th generation AI Engine, Z-axis linear vibration motor |
OTHERS | ASUS ZenFone Zoom (ZX551ML) | Xiaomi Redmi Note 9 Pro |
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Included Accessories | Power adapter | Protective cover, SIM card removal tool, USB-C cable, 33W charger | |
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Compliant Standards | - | TUV Rheinland Low Blue Light Certification |