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Asus Zenfone 5Z (ZS621KL 64GB) vs Xiaomi Redmi Note 9S (64GB)

Side by side comparison between Asus Zenfone 5Z vs Xiaomi Redmi Note 9S phones, differences, pros, cons with full specifications. What's the better?

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Compare Xiaomi Redmi Note 9S XAsus Zenfone 5Z (ZS621KL 64GB)09Points
Asus Zenfone 5Z (ZS621KL 64GB)
6.2"
IPS

1080x2246

12
MP

8mp

6GB
RAM

64bit Octa

3300
mAh

(Non removable)

vs
10PointsXiaomi Redmi Note 9S (64GB)Compare Asus Zenfone 5Z X
Xiaomi Redmi Note 9S (64GB)
6.67"
IPS

1080x2400

48
MP

16mp

4GB
RAM

64bit Octa

5020
mAh

(Non removable)

What's the better phone? Xiaomi Redmi Note 9S (64GB)

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 5Z (ZS621KL 64GB)9 Advantages Asus Zenfone 5Z (ZS621KL 64GB)vsRedmi Note 9S (64GB)10 Advantages Xiaomi Redmi Note 9S (64GB)
+6GB LPDDR4X50%
More RAM memory. Typically more responsive and better for multitasking.
vs4GB LPDDR4X
+165 grams (5.78 ounces)27%
Lighter
vs209 grams (7.32 ounces)
+7.9 millimeters (0.31 inches)11%
Thinner
vs8.8 millimeters (0.35 inches)
+Aluminum frame, glass front/backAdvantage
More resistant material
vsPlastic body, glass front/back
+402 PPI2%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
vs395 PPI
+Dual-LED flashAdvantage
The Dual-LED flash helps in dark places or in low light
vsLED flash
+OIS (4-axis): Optical stabilizationAdvantage
Image stabilization prevents blurry photos and helps in recording motion video
vsEIS: Digital stabilization
+f/1.8 (aperture)11%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
vsf/2.0 (aperture)
+NFCAdvantage
NFC allows you to make payments by approach quickly and securely
vsNot supported
2.7Ghz 64bit Octa-Corevs+2.3Ghz 64bit Octa-Core2%
More powerful processor, you can open your applications faster
Not supportedvs+HDR10Advantage
The HDR10 display provides vibrant colors and more details
1080x2246 pixelsvs+1080x2400 pixels7%
Higher resolution screen
6.2"vs+6.67"8%
Larger screen
(dual camera) 12MP + 8MPvs+(quad camera) 48MP + 8MP + 5MP + 2MP2 times
Higher resolution main camera
1/2.55" inchesvs+1/2" inches28%
The larger sensor camera lets you take photos with better depth.
(front) 8MPvs+(front) 16MP99%
Higher resolution secondary camera to take pictures and selfies
3300 mAhvs+5020 mAh52%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
2 slots (Dual-SIM)
(hybrid slot/shares the same microSD slot)
vs+2 slots (Dual-SIM)
(dedicated slot)Advantage
More SIM card slots. You can choose more carriers.
Not supportedvs+P2i certifiedAdvantage
Protection against water allows you talk to your friends in the rain, for example

37 Common items in both devices
64GB (51GB available) / 64GB (50GB available)
UFS 2.1
Until 1TB microSD, microSDXC / Until 512GB microSD, microSDXC
TFT IPS LCD
60Hz
16 million
Only digital zoom
+30 specs and more in the table below

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

Highlight differencesClear highlight
Physical featuresAsus Zenfone 5Z (ZS621KL 64GB)Xiaomi Redmi Note 9S (64GB)
ModelZenfone 5Z (ZS621KL 64GB)Redmi Note 9S (64GB)
Other model namesAsus Zenfone 5z 6GB RAM (ZS621KL), ASUS_Z01RDXiaomi Note 9S (M2003J6A1G Global version) 4GB RAM
Country or region availableIndia
India
(Global, International)
(Global, International)
BrandAsusXiaomi
Release dateJune, 2018April, 2020
Depth7.9 millimeters (0.31 inches)8.8 millimeters (0.35 inches)
Size (width x height)75.65 x 153 millimeters (2.98 x 6.02 in)76.68 x 165.75 millimeters (3.02 x 6.53 in)
Weight165 grams (5.78 ounces)209 grams (7.32 ounces)
Qwerty physical keyboardNot supportedNot supported
AntennaInternal antennaInternal antenna
Build, materialsAluminum frame, glass front/backPlastic body, glass front/back
Protection against water and othersNot supportedP2i certified: water repellent nano-coating
System (OS)Asus Zenfone 5Z (ZS621KL 64GB)Xiaomi Redmi Note 9S (64GB)
Operating systemAndroid 8.0 OreoAndroid 10
Firmware updateAndroid 10feature not registered
HardwareAsus Zenfone 5Z (ZS621KL 64GB)Xiaomi Redmi Note 9S (64GB)
Chipset64bit - Qualcomm Snapdragon 845 MSM8998 (10nm)64bit - Qualcomm Snapdragon 720G SM7125 (8nm)
CPU processorOcta-Core, 2 processors:
2.7Ghz Quad-Core Kryo 385 Gold
1.7Ghz Quad-Core Kryo 385 Silver
Octa-Core, 2 processors:
2.3Ghz Dual-Core Kryo 465 Gold
1.8Ghz Hexa-Core Kryo 465 Silver
GPU graphical controllerQualcomm Adreno 630 710MhzQualcomm Adreno 618
RAM memory6GB LPDDR4X4GB LPDDR4X
Internal storage64GB (51GB available)
UFS 2.1
64GB (50GB available)
UFS 2.1
External storageUntil 1TB microSD, microSDXC
(hybrid slot/shares the same SIM-2 slot)
Until 512GB microSD, microSDXC
(dedicated slot)
DisplayAsus Zenfone 5Z (ZS621KL 64GB)Xiaomi Redmi Note 9S (64GB)
Display typeTFT IPS LCDTFT IPS LCD
Screen size6.2" inches6.67" inches
Screen-to-body ratio~83.7% (screen-to-body ratio)~84.5% (screen-to-body ratio)
Display resolution1080x2246 pixels (18.7:9)1080x2400 pixels (20:9)
TouchscreenCapacitive Multitouch 10-pointsCapacitive Multitouch
Pixel density (dot pitch)402 PPI395 PPI
Colors16 million16 million
Scratch-resistant glassGorilla GlassGorilla Glass 5
Display features60Hz, 550 nits60Hz, 450 nits, HDR10
Mobile networksAsus Zenfone 5Z (ZS621KL 64GB)Xiaomi Redmi Note 9S (64GB)
Dual-SIMDual-SIM Standby - Call active on one sim card
(hybrid slot/shares the same microSD slot)
Dual-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/upload800/100 Mbps800/150 Mbps
Network technology2G, 3G, 4G2G, 3G, 4G
Frequency, bandsExpand band detailsCollapse 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 800/850/900UMTS 850/900/1700/1900/2100
Primary 4G networkLTE Cat15 (Bands 1,2,3,5,7,8,18,19,20,26,28)
TD-LTE (Bands 38,39,40,41)
LTE Cat15/13 (Bands 1, 2, 3, 4, 5, 7, 8, 20, 28)
TD-LTE (Bands 38, 40)
VoLTE
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-AGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkGPRS, EDGEGPRS, EDGE
CallingAsus Zenfone 5Z (ZS621KL 64GB)Xiaomi Redmi Note 9S (64GB)
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
SpeakerphoneSupportedSupported
Video callingSupportedSupported
Call controlVoice dialing, Voice recorderVoice dialing, Voice recorder, Voice commands
CameraAsus Zenfone 5Z (ZS621KL 64GB)Xiaomi Redmi Note 9S (64GB)
Back camera (main camera)(dual camera)
12 megapixels
8MP ultrawidef/2.012mm1/4"1.12µmFF
(quad camera)
48 megapixels
8MP ultrawidef/2.213mm1/4"1.12µm119º
5MP macrof/2.41.12µmAF
2MP depthf/2.4
Main camera resolution4000x3000 pixels8000x6000 pixels
Video recording (primary)4K UHD (3840x2160) 30 fps4K UHD (3840x2160) 30 fps
FlashDual-LED flashLED flash
Focal aperturef/1.8 (aperture)f/2.0 (aperture)
Focal length24mm lens26mm lens
Sensor size1/2.55" inches1/2" inches
Pixel size1.4µm 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 sensorNot supportedNot supported
HDRHDR photo on both camerasHDR photo on both cameras
2ª cameraAsus Zenfone 5Z (ZS621KL 64GB)Xiaomi Redmi Note 9S (64GB)
Front camera (secondary)8 megapixels16 megapixels
Front camera resolution3264x2448 pixels4608x3456 pixels
Video recording (secondary)Full HD (1920x1080)Full HD (1920x1080)
Front flashNot supportedNot supported
Focal aperturef/2.0 (aperture)f/2.5 (aperture)
Focal length24mm lensfeature not registered
Sensor size1/4" inches1/3.06" inches
Pixel size1.12µm pixel1µm pixel
MultimediaAsus Zenfone 5Z (ZS621KL 64GB)Xiaomi Redmi Note 9S (64GB)
RadioFMFM
TVNot supportedNot supported
Video formatsMP4, H.265, H.264, H.263MP4, H.265, H.264, H.263, XviD, MKV
Audio formatsMP3, OGG, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC
ConnectivityAsus Zenfone 5Z (ZS621KL 64GB)Xiaomi Redmi Note 9S (64GB)
USBUSB 2.0 Type-C, USB OTG On-The-GoUSB 2.0 Type-C, USB OTG On-The-Go
TV outputNot supportedNot supported
Audio output3.5mm jack3.5mm jack
Bluetooth5.0 + A2DP/LE5.0 + A2DP/LE
WiFi802.11 a/b/g/n/ac (2.4Ghz, 5Ghz)802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO
DLNANot supportedNot supported
NFCSupportedNot supported
GPSA-GPS, GeoTagging, GLONASS, BeiDouA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
Infrared portNot supportedSupported
Other functionsAsus Zenfone 5Z (ZS621KL 64GB)Xiaomi Redmi Note 9S (64GB)
Active noise cancellationSupportedSupported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
SensorsAccelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Face unlock
Fingerprint sensor (rear-mounted)
Accelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Face unlock
Fingerprint sensor (side-mounted)
Other features- Colors: Midnight Blue, Meteor Silver
- 2.5D curved glass screen
- 95% DCI-P3 coverage
- Supports glove touch
- ASUS ZenUI 5.0
- 24-bit/192kHz audio
- DTS sound (only headphones)
- WiFi direct, hotspot
- Colors: Aurora Blue, Glacier White, Interstellar Black
- MIUI 11
- WiFi direct, hotspot
Power supplyAsus Zenfone 5Z (ZS621KL 64GB)Xiaomi Redmi Note 9S (64GB)
BatteryLi-Ion: Lithium-Ion (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity3300 mAh5020 mAh
Charger, watts18W (9V/2A) Fast battery charging18W Fast battery charging
Talk time autonomy1500 minutes | 25 hours | 1 daysfeature not registered
Standbyfeature not registeredfeature not registered
Radiation rateAsus Zenfone 5Z (ZS621KL 64GB)Xiaomi Redmi Note 9S (64GB)
SAR 1.6W/kg (USA, Mexico, etc.)1.04W/kg (head) | 0.37W/kg (body)0.96W/kg (head) | 0.4W/kg (body)
SAR 2W/kg (Europe, UK, etc.)1.2W/kg (head) | 1.477W/kg (body)0.72W/kg (head) | 0.98W/kg (body)
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