Xiaomi MI 9 vs. ASUS Zenfone 8 Flip

Phone Comparison, Reviews and Tests

In depth comparison and review of Xiaomi MI 9 and ASUS Zenfone 8 Flip. 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 9 vs. ASUS Zenfone 8 Flip Comparison Chart
DESIGN AND DIMENSIONS Xiaomi MI 9 ASUS Zenfone 8 Flip
Product Type Smartphone Smartphone
Manufacturer Model Number - ZS672KS
Form Factor Touch Touch
Height 157.5 mm 165.04 mm ASUS Zenfone 8 Flip has greater height than Xiaomi MI 9.
Width 74.67 mm 77.28 mm ASUS Zenfone 8 Flip has greater width than Xiaomi MI 9.
Depth 7.61 mm 9.6 mm Xiaomi MI 9 is narrower than Xiaomi MI 9.
Weight 173 g 230 g Xiaomi MI 9 is lighter than Xiaomi MI 9.
Body Colour Ocean blue | Piano black Galactic black
Body Material Curved glass Glass
Waterproof (Water-resistant) - -
SAR Value 1.301 W/kg (body), 1.389 W/kg (head) 1.43 W/kg (head), 1.245 W/kg (body), 3.504 W/kg (limb)
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
DISPLAY Xiaomi MI 9 ASUS Zenfone 8 Flip
Display Type OLED display OLED display
Display Technology AMOLED AMOLED
Screen Size (Display Size) 6.39" 6.67" ASUS Zenfone 8 Flip has larger screen size than Xiaomi MI 9.
Screen Resolution (Display Resolution) 2340 x 1080 pixels 2400 x 1080 pixels ASUS Zenfone 8 Flip has better screen resolution than Xiaomi MI 9.
Display Format Full HD+ Full HD+
Pixel Density 403 ppi -
Aspect Ratio - 20:9
Max Brightness 600 cd/m² 1000 cd/m² ASUS Zenfone 8 Flip has better display brightness than Xiaomi MI 9.
Contrast Ratio 60000:1 -
HDR Yes Yes Both phones have HDR.
HDR Technology HDR10 HDR10+
Display Enhancement Technology Sunshine mode 2.0 DC Dimming
Display Refresh Rate - 90 Hz
Display Features Always-on display, Reading mode, Colour temperature adjustment, night mode, Wide Colour Gamut (WCG) ASUS Glove Touch technology, Delta-E < 1, NanoEdge display, 105% NTSC, 110% DCI-P3
Display Protection (Screen Protector) Fingerprint-resistant coating, Corning Gorilla Glass 6 (scratch resistant glass), oil protective coating Corning Gorilla Glass 6 (scratch resistant glass)
PROCESSOR Xiaomi MI 9 ASUS Zenfone 8 Flip
Processor Type (CPU) Qualcomm Snapdragon 855 Qualcomm Snapdragon 888 5G
Processor Number - SM8350
Clock Speed 2.84 GHz 2.84 GHz Both phones have the same clock speed.
Processor Core Qty 8-core 8-core Both phones have the same number of phone cores.
64-bit Architecture Yes - Xiaomi MI 9 has 64-bit architecture.
Graphics System (GPU) Qualcomm ADRENO 640 Qualcomm ADRENO 660
MEMORY Xiaomi MI 9 ASUS Zenfone 8 Flip
RAM LPDDR4X SDRAM - 6 GB LPDDR5 SDRAM - 8 GB ASUS Zenfone 8 Flip has more RAM than Xiaomi MI 9.
Internal Memory Size (Storage Capacity) 64 GB 256 GB ASUS Zenfone 8 Flip has more internal memory than Xiaomi MI 9.
Memory Interface - UFS 3.1
Supported Flash Memory Cards (Expandable Memory) - microSDHC, microSD, microSDXC - up to 2 TB
CAMERA Xiaomi MI 9 ASUS Zenfone 8 Flip
MAIN CAMERA
Number of Main Cameras 3 3
Rear Camera Design - Flip
Sensor Resolution 48 Megapixel 64 Megapixel ASUS Zenfone 8 Flip has better camera resolution than Xiaomi MI 9.
Sensor Size - 1/1.7"
Sensor Name Sony Exmor RS IMX586 sensor Sony Exmor RS IMX686 sensor
Lens Type Ultra wide-angle lens Wide-angle lens
Lens Aperture F/1.75 F/1.8 Xiaomi MI 9 has better lens aperture than Xiaomi MI 9.
Field of View (FoV) - 78.3 degree(s)
Pixel Size 0.8 μm 0.8 μm Both phones have the same camera pixel size.
Optical Image Stabiliser (OIS) - Optical Image Stabiliser (OIS) ASUS Zenfone 8 Flip has optical stabilisation.
Focus Adjustment Automatic -
Laser Auto Focus Yes -
Minimum Focal Length (Focal Distance) - 26.6 mm
Optical Zoom 2x -
Digital Zoom 10x -
Special Effects HDR -
Camera Modes 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 Slow motion video, Time-lapse mode, Pro mode, Auto Panorama
Face Recognition (Face ID) Face recognition - Xiaomi MI 9 has face detection.
Light Source Dual flash LED flash
Still Image Resolutions 8000 x 6000 -
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, 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 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 30 fps, 3840 x 2160 (4K) at 60 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, Slo-mo video 1280 x 720 (720p) at 480 fps, 7680 x 4320 (8K) at 30fps, Slo-mo video 3840 x 2160 (4K) at 120 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 Phase Detect Auto-Focus (PDAF), 3-axis electronic image stabilisation, Wind Noise Filter, Motion tracking, Quad Bayer technology, HyperSteady, Free Zoom, Mic Focus, 2x1 On-Chip Lens (OCL), Quick Flip Angle camera
SECOND CAMERA
Sensor Resolution (2nd Camera) 12 Megapixel 12 Megapixel Both phones have the same second camera resolution.
Sensor Size (2nd Camera) - 1/2.55"
Sensor Name (2nd Camera) - Sony Exmor RS IMX363 sensor
Lens Type (2nd Camera) Telephoto lens Ultra wide-angle lens
Lens Aperture (2nd Camera) F/2.2 F/2.2 Both phones have the same second camera lens aperture.
Pixel Size (2nd Camera) 1 μm 1.4 μm ASUS Zenfone 8 Flip has larger second camera pixel size than Xiaomi MI 9.
Minimum Focal Length (2nd Camera) - 14.3 mm
Camera Features (2nd Camera) Macro photography Dual Pixel Phase Detect Auto-Focus (PDAF), Real-time distortion correction, Dual Pixel image sensor, 4cm macro photography
THIRD CAMERA
Sensor Resolution (3rd Camera) 16 Megapixel 8 Megapixel Xiaomi MI 9 has higher resolution third camera than ASUS Zenfone 8 Flip.
Sensor Size (3rd Camera) - 1/2.55"
Lens Type (3rd Camera) Ultra wide-angle lens Telephoto lens
Lens Aperture (3rd Camera) F/2.2 -
Pixel Size (3rd Camera) 1 μm 1.4 μm ASUS Zenfone 8 Flip has larger third camera pixel size than Xiaomi MI 9.
Optical Zoom - 3x
Digital Zoom - 12x
Camera Features (3rd Camera) - Dual Pixel image sensor
FRONT CAMERA
Number of Front Cameras 1 0
Sensor Resolution (Front) 20 Megapixel -
Lens Aperture (Front) F/2.0 -
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 Xiaomi MI 9 ASUS Zenfone 8 Flip
Battery Capacity (Battery Size) 3300 mAh 5000 mAh ASUS Zenfone 8 Flip has larger battery capacity than Xiaomi MI 9.
Fast Charging Technology Qualcomm Quick Charge 4.0+ Qualcomm Quick Charge 4.0, Power Delivery 3.0 Both phones have fast charging technology.
Recharge Time (Charging Time) - 1.7 hours
Wireless Charging Standards WPC, Qi -
Battery Technology - Lithium polymer
CELLULAR Xiaomi MI 9 ASUS Zenfone 8 Flip
Technology CDMA2000 1X / GSM / WCDMA (UMTS) / TD-SCDMA WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G 5G ASUS Zenfone 8 Flip has more advanced generation mobile network.
Operating System - Android 11
User Interface MIUI 10 ASUS ZenUI 8.0
Intelligent Assistant Google Assistant -
Payment Technology Android Pay -
Navigation GPS, A-GPS, GLONASS, BeiDou, Galileo GPS, GLONASS, BeiDou, Galileo, QZSS, NavIC
COMMUNICATIONS Xiaomi MI 9 ASUS Zenfone 8 Flip
Data Transmission GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE GPRS, EDGE, HSPA+, FDD-LTE, TDD-LTE, DC-HSPA+, 5G NR FR1
2G Band - 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 3, Band 4, Band 5, Band 6, Band 8, Band 19
3G UMTS Frequency 2100, 1900, 1700, 850, 900 2100, 1900, 1800, 1700, 850, 800, 900, 800
4G LTE Band 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 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 34, Band 38, Band 39, Band 40, Band 41, Band 42
4G LTE Frequency 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 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, TDD 2000, TDD 2600, TDD 1900, TDD 2300, TDD 2500, TDD 3500
5G NR Band - N1, n2, n3, n5, n7, n8, n20, n28, n38, n77, n78, n12
5G NR Frequency - FDD 2100, FDD 1900PCS, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 3700, TDD TD 3500, n12
Wireless Interface IEEE 802.11a/b/g/n/ac IEEE 802.11a/b/g/n/ac/ax, Wi-Fi 6E
Bluetooth Bluetooth 5.0 Bluetooth 5.2 EDR
Bluetooth Profiles - A2DP
NFC Yes Yes Both phones have an NFC reader for mobile payments.
WLAN Security WPA3 -
Modem - Snapdragon X60 5G
Messaging Services SMS, MMS -
MEDIA Xiaomi MI 9 ASUS Zenfone 8 Flip
Supported Digital Audio Standards WAV, AAC, AMR, MP3, FLAC, apt-X, LDAC, apt-X HD Apt-X, apt-X HD
Supported Digital Video Standards MKV, VC-1, XviD, MPEG-4, H.264, M4V, HEVC, VP8, VP9 -
Sound Enhancements Qualcomm TrueWireless Stereo Plus Dirac HD Sound, Hi-Res audio certified, OZO Audio, Qualcomm aptX Adaptive
Audio Amplifier - Dual NXP TFA9874
FEATURES Xiaomi MI 9 ASUS Zenfone 8 Flip
Phone Functions Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert -
Sensors Accelerometer, ambient light sensor, digital compass, gyro sensor, ultrasonic proximity sensor, linear rotation vector sensor Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, G-sensor, hall sensor, gyroscope
Security Devices Fingerprint reader (under display) Fingerprint reader (under display), face recognition
Additional Phone Features Infrared remote control, MIMO technology, MU-MIMO technology, MI Turbo, GAME Turbo MIMO technology, Power Saving Mode, AudioWizard, Smart Key, One Hand Mode, ASUS Noise Reduction technology, ARCore, dual stereo speakers, triple noise reduction microphones, system mode
OTHERS Xiaomi MI 9 ASUS Zenfone 8 Flip
Included Accessories Protective cover, SIM card removal tool, USB-C cable, USB-C audio adapter, 18W QC3.0 charger SIM card removal tool, USB-C to USB-C cable, protective case, power adapter (30 W)
Compliant Standards TUV Rheinland Certified Safe Fast-Charge System -
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