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Asus Zenfone 8 (128GB/6GB) vs Xiaomi Redmi Note 9 (128GB Global)

Side by side comparison between Asus Zenfone 8 vs Xiaomi Redmi Note 9 phones, differences, pros, cons and full specifications. What's the better?

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Compare Xiaomi Redmi Note 9 X Asus Zenfone 8 (128GB/6GB) 23Points
5.9"
AMOLED

1080x2400

64
MP

12mp

6GB
RAM

Octa-core

4000
mAh

(Non removable)

vs
04Points Xiaomi Redmi Note 9 (128GB Global) Compare Asus Zenfone 8 X
6.53"
IPS

1080x2340

48
MP

13mp

4GB
RAM

Octa-core

5020
mAh

(Non removable)

What's the better phone? Asus Zenfone 8 (128GB/6GB)

The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!

Zenfone 8 (128GB/6GB)} 23 Advantages Asus Zenfone 8 (128GB/6GB) vs Redmi Note 9 (128GB Global)} 4 Advantages Xiaomi Redmi Note 9 (128GB Global)
+2.84GHz 64bit Octa-core (5nm)41%
More powerful processor, you can open your applications faster
vs2GHz 64bit Octa-core (12nm)
+6GB LPDDR550%
More RAM memory. Typically more responsive and better for multitasking.
vs4GB LPDDR4X
+UFS 3.1Advantage
Fastest write and read storage.
vseMMC 5.1
+169 grams (5.92 ounces)18%
Lighter
vs199 grams (6.97 ounces)
+Aluminum frame, glass front/backAdvantage
More resistant material
vsPlastic body, glass front
+Super AMOLEDAdvantage
Super AMOLED display is brighter and more vivid
vsTFT IPS LCD
+HDR10+Advantage
The HDR10+ display provides vibrant colors and more details
vsNot supported
+120Hz100%
The display reproduces more frames per second because the frequency (Hertz) is higher, improves fluidity and tires your eyes less.
vs60Hz
+1080x2400 pixels3%
Higher resolution screen
vs1080x2340 pixels
+446 PPI13%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
vs395 PPI
+(dual camera) 64MP + 12MP27%
Higher resolution main camera
vs(quad camera) 48MP + 8MP + 2MP + 2MP
+OIS (4-axis): Optical stabilizationAdvantage
Image stabilization prevents blurry photos and helps in recording motion video
vsEIS: Digital stabilization
+1/1.73" inches16%
The larger sensor camera lets you take photos with better depth.
vs1/2" inches
+8K UHD (7680x4320)15 times
More image quality for recording videos with the primary camera
vsFull HD (1920x1080)
+(front) 4K UHD (3840x2160)3 times
More image quality for recording videos with the secondary camera
vs(front) Full HD (1920x1080)
+Android 13Advantage
Android 13 is newer and safer
vsAndroid 11
+5G SA/NSAAdvantage
The 5G SA/NSA network is newer and faster
vs4G LTE-A
+(5G SA/NSA) 2000 Mbps6 times
Faster for surfing the internet and download files
vs(4G LTE-A) 300 Mbps
+30W67%
More power (watts) to charge the battery faster. Sometimes, the charger that comes with the device doesn't have the same power supported by the device. Check before you buy it.
vs18W
+Stereo soundAdvantage
Better sound quality for listening to music or clearer hands-free calls
vsMono sound (not stereo)
+802.11 a/b/g/n/ac/ax [wifi6E/6]Advantage
WiFi 802.11 a/b/g/n/ac/ax [wifi6E/6] is newer and faster
vs802.11 a/b/g/n/ac [wifi5]
+5.2 + A2DP/LEAdvantage
Bluetooth 5.2 + A2DP/LE is newer and faster
vs5.0 + A2DP/LE
+IP68 certifiedAdvantage
Protection against water allows you talk to your friends in the rain, for example
vsWater repellent nano-coating (don't immerse)
Not supportedvs+Until 512GB microSD, microSDXCAdvantage
More external storage for files using memory cards
5.9"vs+6.53"11%
Larger screen
(front) 12MPvs+(front) 13MP7%
Higher resolution secondary camera to take pictures and selfies
4000 mAhvs+5020 mAh26%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use

31 Common items in both devices
128GB (107GB available) / 128GB (106GB available)
8.9 millimeters (0.35 inches)
16 million
LED flash
Only digital zoom
PDAF: phase detection autofocus
BSI sensor
+24 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differences Clear highlight

📱 Model features

Asus Zenfone 8 (128GB/6GB)Redmi Note 9 (128GB Global)
ModelZenfone 8 (128GB/6GB)Redmi Note 9 (128GB Global)
Other model namesAsus Zenfone 8 (ZS590KS, ZS590KS-2A007EU)Mi Redmi Note 9 M2003J15SG Global version (NFC)
Country or region available(Global, International)
(Global, International)
(Global, International)
(Global, International)
BrandAsusXiaomi
Release date5/13/2021, Announced: 5/12/20215/12/2020, Announced: 4/30/2020
Depth8.9 millimeters (0.35 inches)8.9 millimeters (0.35 inches)
Size (width x height)68.5 x 148 millimeters (2.7 x 5.83 in)77.2 x 162.3 millimeters (3.04 x 6.39 in)
Weight169 grams (5.92 ounces)199 grams (6.97 ounces)
Build, materialsAluminum frame, glass front/backPlastic body, glass front
Protection against water and othersIP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistantWater repellent nano-coating (don't immerse)

📲 Display

Asus Zenfone 8 (128GB/6GB)Redmi Note 9 (128GB Global)
Display typeSuper AMOLEDTFT IPS LCD
Screen size5.9" inches6.53" inches
Screen-to-body ratio~82.9% (screen-to-body ratio)~83.5% (screen-to-body ratio)
Display resolution1080x2400 pixels (20:9)1080x2340 pixels (19.5:9)
TouchscreenCapacitive Multitouch 10-pointsCapacitive Multitouch
Pixel density (dot pitch)446 PPI395 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass VictusGorilla Glass 5
Refresh rate120Hz60Hz
Display features700nits[typ], 1100nits[peak]
HDR10+
Always-On Display
450nits[typ]

🤖 Operating System

Asus Zenfone 8 (128GB/6GB)Redmi Note 9 (128GB Global)
System versionAndroid 11Android 10
Firmware updateAndroid 13Android 11
User InterfaceZenUI 8 / 9 / 10MIUI 11 / 12

⚙️ Processor

Asus Zenfone 8 (128GB/6GB)Redmi Note 9 (128GB Global)
Chipset64bit: Qualcomm Snapdragon 888 (SM8350) (5nm)64bit: MediaTek Helio G85 (12nm)
CPUOcta-core, 3 processors:
1x 2.84GHz Kryo 680 (Single-core)
3x 2.42GHz Kryo 680 (Triple-core)
4x 1.8GHz Kryo 680 (Quad-core)
Octa-core, 2 processors:
2x 2GHz ARM-Cortex-A75 (Dual-core)
6x 1.8GHz ARM-Cortex-A55 (Hexa-core)
GPU graphical controllerQualcomm Adreno 660 (840MHz)ARM Mali-G52 MC2 (1GHz)
Performance (benchmark)AnTuTu: 676001 (v8), 799738 (v9)
Geekbench: 3604 (v5.1)
GFXBench: 61fps (ES 3.1 onscreen)
AnTuTu: 200451 (v8)
Geekbench: 1292 (v5.1)

💽 Memory and storage

Asus Zenfone 8 (128GB/6GB)Redmi Note 9 (128GB Global)
RAM memory6GB LPDDR54GB LPDDR4X
Internal storage128GB (107GB available)
UFS 3.1
128GB (106GB available)
eMMC 5.1
External storageNot supportedUntil 512GB microSD, microSDXC
(dedicated slot)

📶 Mobile networks

Asus Zenfone 8 (128GB/6GB)Redmi Note 9 (128GB Global)
Dual-SIMDual-SIM Standby - Call active on one sim cardDual-SIM Standby - Call active on one sim card
(dedicated slot)
SIM card2 slots (Dual-SIM)
nano-SIM (4FF)
2 slots (Dual-SIM)
nano-SIM (4FF)
Maximum Download / Upload2000/1024 Mbps300/150 Mbps
Network technology2G, 3G, 4G, 5G2G, 3G, 4G
Frequency, bands Expand band details Collapse details
GSM MHz bandQuad-Band 850/900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Primary 3G networkUMTS 800/850/900/1700/1900/2100UMTS 850/900/1700/1900/2100
Primary 4G networkLTE Cat20
VoLTE
America version:
LTE (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 30, 66, 71)
TD-LTE (34, 38, 39, 40, 41, 42)
Global version:
LTE (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28)
TD-LTE (34, 38, 39, 40, 41, 42)
LTE Cat7 (1, 2, 3, 4, 5, 7, 8, 20, 28)
TD-LTE (38, 40, 41)
VoLTE
Primary 5G networkAmerica version:
SA/NSA (1, 2, 3, 5, 7, 8, 12, 20, 25, 38, 40, 66, 71, 77, 78)
Global version:
SA/NSA (1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 77, 78)
Not supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSAGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Secondary 3G networkUMTS 800/850/900/1700/1900/2100UMTS 850/900/1700/1900/2100
Secondary 4G networkLTE Cat20
VoLTE
America version:
LTE (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 30, 66, 71)
TD-LTE (34, 38, 39, 40, 41, 42)
Global version:
LTE (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28)
TD-LTE (34, 38, 39, 40, 41, 42)
LTE Cat7 (1, 2, 3, 4, 5, 7, 8, 20, 28)
TD-LTE (38, 40, 41)
VoLTE
Secondary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-AGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A

📷 Camera

Asus Zenfone 8 (128GB/6GB)Redmi Note 9 (128GB Global)
Back camera (main camera)(dual camera)
64 megapixels
12MP ultrawide f/2.2112°14mm1/2.55"1.4µmPDAF
(quad camera)
48 megapixels
8MP ultrawide f/2.213mm1/4"1.12µm118°
2MP macro f/2.41.75µmAF
2MP depth f/2.41/5"1.7µm
Main camera resolution10120x6328 pixels8000x6000 pixels
Video recording (primary)8K UHD (7680x4320) 24 fpsFull HD (1920x1080) 30 fps
FlashLED flashLED flash
Focal aperturef/1.8 (aperture)f/1.8 (aperture)
Focal length26mm (lens)26mm (lens)
Sensor size1/1.73" inches1/2" inches
Pixel size0.8µm pixel0.8µm pixel
AutofocusPDAF: phase detection autofocusPDAF: phase detection autofocus
Touch focusSupportedSupported
Image stabilizationOIS (4-axis): Optical stabilizationEIS: Digital stabilization
ZoomOnly digital zoomOnly digital zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorSupportedSupported
HDRHDR photo/video on both camerasHDR photo on both cameras
Camera extras4K@120fps
1080p@240fps
720p@480fps
feature not registered

📸 Front camera

Asus Zenfone 8 (128GB/6GB)Redmi Note 9 (128GB Global)
Front camera (secondary)12 megapixels13 megapixels
Front camera resolution4000x3000 pixels4128x3096 pixels
Video recording (secondary)4K UHD (3840x2160)Full HD (1920x1080)
Front flashNot supportedNot supported
Focal aperturef/2.5 (aperture)f/2.3 (aperture)
Focal length28mm (lens)29mm (lens)
Sensor size1/2.93" inches1/3.06" inches
Pixel size1.22µm pixel1.12µm pixel

🔉 Sound and multimedia

Asus Zenfone 8 (128GB/6GB)Redmi Note 9 (128GB Global)
LoudspeakerStereo sound
32-bit/384kHz
Mono sound (not stereo)
Active noise cancellation2 microphones or more2 microphones or more
RadioFMFM
TVNot supportedNot supported
Video formatsMP4, H.265, H.264, H.263, XviD, MKVMP4, H.265, H.264, H.263, XviD, MKV
Audio formatsMP3, WAV, WMA, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC

🔌 Connectivity

Asus Zenfone 8 (128GB/6GB)Redmi Note 9 (128GB Global)
USBUSB 2.0 Type-C, USB OTG On-The-GoUSB 2.0 Type-C, USB OTG On-The-Go
Audio output3.5mm jack3.5mm jack
TV outputUSB Type-C (reversible)USB Type-C (reversible)
Bluetooth5.2 + A2DP/LE5.0 + A2DP/LE
WiFi802.11 a/b/g/n/ac/ax [wifi6E/6] (2.4GHz, 5GHz, 6GHz) + MIMO
WiFi Direct, hotspot
802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO
WiFi Direct, hotspot
DLNANot supportedNot supported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS, NavICA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFCSupportedSupported
Infrared portNot supportedSupported

🧭 Sensors

Asus Zenfone 8 (128GB/6GB)Redmi Note 9 (128GB Global)
SensorsAccelerometer
Ambient light sensor
Compass
Face unlock
Fingerprint sensor (under display)
Gyroscope
Hall effect
Proximity sensor
Accelerometer
Ambient light sensor
Compass
Face unlock
Fingerprint sensor (rear-mounted)
Gyroscope
Proximity sensor
Vibrating alertSupportedSupported

🔋 Battery

Asus Zenfone 8 (128GB/6GB)Redmi Note 9 (128GB Global)
Battery typeLiPo: li-ion polymer (Non removable)LiPo: li-ion polymer (Non removable)
Battery capacity4000 mAh5020 mAh
Charger, watts30W Wired fast charging
5W Reverse charging by cable
Quick Charge 4
USB Power Delivery 3.0
18W Wired fast charging
9W Reverse charging by cable
Inductive / wireless chargingNot supportedNot supported
Talk time autonomyfeature not registered33 hours (1.4 days)
Standbyfeature not registeredfeature not registered

➕ Other features

Asus Zenfone 8 (128GB/6GB)Redmi Note 9 (128GB Global)
Call controlVoice dialing, Voice recorder, Voice commandsVoice dialing, Voice recorder, Voice commands
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
Hands-free callingSupportedSupported
Video callingSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
AntennaInternal antennaInternal antenna
Qwerty physical keyboardNot supportedNot supported
Miscellaneous• Colors: Obsidian Black, Horizon Silver• Colors: Forest Green, Midnight Grey, Polar White
• 22.5W charger (18W phone support)

☢️ Radiation rate

Asus Zenfone 8 (128GB/6GB)Redmi Note 9 (128GB Global)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registered0.84W/kg (head), 0.9W/kg (body)
SAR 2W/kg (Europe, UK, etc.)feature not registered0.8W/kg (head), 1.14W/kg (body)
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