Xiaomi Redmi K20 (128GB) vs Asus Zenfone 8 (128GB/8GB)

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Side by side comparison between Xiaomi Redmi K20 vs Asus Zenfone 8 phones, differences, pros, cons and full specifications. What's the better?

5/14/2021 3:41 PM, updated: 1/24/2023 7:02 AM

Compare Asus Zenfone 8 X Xiaomi Redmi K20 (128GB) 05Points

Specifications Compare Models Pictures

6.39"
AMOLED

1080x2340

48
MP

20mp

6GB
RAM

Octa-core

4000
mAh

(Non removable)

22Points Asus Zenfone 8 (128GB/8GB) Compare Xiaomi Redmi K20 X

Specifications Compare Models Pictures

5.9"
AMOLED

1080x2400

64
MP

12mp

8GB
RAM

Octa-core

4000
mAh

(Non removable)

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

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!

5 Advantages Xiaomi Redmi K20 (128GB)	vs	22 Advantages Asus Zenfone 8 (128GB/8GB)
+8.8 millimeters (0.35 inches)1% Thinner	vs	8.9 millimeters (0.35 inches)
+6.39"8% Larger screen	vs	5.9"
+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light	vs	LED flash
+Digital and optical zoomAdvantage The zoom allows for better focus and approach to take pictures	vs	Only digital zoom
+(front) 20MP66% Higher resolution secondary camera to take pictures and selfies	vs	(front) 12MP
2.2GHz 64bit Octa-core (8nm)	vs	+2.84GHz 64bit Octa-core (5nm)25% More powerful processor, you can open your applications faster
6GB LPDDR4X	vs	+8GB LPDDR533% More RAM memory. Typically more responsive and better for multitasking.
UFS 2.1	vs	+UFS 3.1Advantage Fastest write and read storage.
191 grams (6.69 ounces)	vs	+169 grams (5.92 ounces)13% Lighter
AMOLED	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
HDR10	vs	+HDR10+Advantage The HDR10+ display provides vibrant colors and more details
60Hz	vs	+120Hz100% The display reproduces more frames per second because the frequency (Hertz) is higher, improves fluidity and tires your eyes less.
1080x2340 pixels	vs	+1080x2400 pixels3% Higher resolution screen
403 PPI	vs	+446 PPI11% Crisper display of text, images and videos because it has more pixels per inch (ppi)
(triple camera) 48MP + 8MP + 13MP	vs	+(dual camera) 64MP + 12MP10% Higher resolution main camera
EIS: Digital stabilization	vs	+OIS (4-axis): Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video
Not supported	vs	+BSI sensorAdvantage The BSI sensor allows the entry of more light generating photos with more detail and brightness
1/2" inches	vs	+1/1.73" inches16% The larger sensor camera lets you take photos with better depth.
4K UHD (3840x2160)	vs	+8K UHD (7680x4320)3 times More image quality for recording videos with the primary camera
(front) Full HD (1920x1080)	vs	+(front) 4K UHD (3840x2160)3 times More image quality for recording videos with the secondary camera
Android 10	vs	+Android 13Advantage Android 13 is newer and safer
4G LTE-A	vs	+5G SA/NSAAdvantage The 5G SA/NSA network is newer and faster
(4G LTE-A) 800 Mbps	vs	+(5G SA/NSA) 2000 Mbps150% Faster for surfing the internet and download files
18W	vs	+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.
802.11 a/b/g/n/ac [wifi5]	vs	+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
5.0 + A2DP/LE	vs	+5.2 + A2DP/LEAdvantage Bluetooth 5.2 + A2DP/LE is newer and faster
Not supported	vs	+IP68 certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example

29 Common items in both devices

128GB (109GB available) / 128GB (107GB available)

Aluminum frame, glass front/back

16 million

PDAF: phase detection autofocus

HDR photo on both cameras / HDR photo/video on both cameras

f/1.8 (aperture)

Capacitive

+22 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

📱 Model features
	Redmi K20 (128GB)	Asus Zenfone 8 (128GB/8GB)
Change model		Choose the model
Model	Redmi K20 (128GB)	Zenfone 8 (128GB/8GB)
Other model names	Xiaomi Redmi K20 M1903F10A, M1903F10C, MZB7754IN, MZB7755IN	Asus Zenfone 8 (ZS590KS, ZS590KS-2A007EU)
Country or region available	China, India	(Global, International)
Brand	Xiaomi	Asus
Release date	6/1/2019	5/13/2021, Announced: 5/12/2021
Depth	8.8 millimeters (0.35 inches)	8.9 millimeters (0.35 inches)
Size (width x height)	74.3 x 156.7 millimeters (2.93 x 6.17 in)	68.5 x 148 millimeters (2.7 x 5.83 in)
Weight	191 grams (6.69 ounces)	169 grams (5.92 ounces)
Build, materials	Aluminum frame, glass front/back	Aluminum frame, glass front/back
Protection against water and others	Not supported	IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant
📲 Display
	Redmi K20 (128GB)	Asus Zenfone 8 (128GB/8GB)
Display type	AMOLED	Super AMOLED
Screen size	6.39" inches	5.9" inches
Screen-to-body ratio	~86.1% (screen-to-body ratio)	~82.9% (screen-to-body ratio)
Display resolution	1080x2340 pixels (19.5:9)	1080x2400 pixels (20:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch 10-points
Pixel density (dot pitch)	403 PPI	446 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 5	Gorilla Glass Victus
Refresh rate	60Hz	120Hz
Display features	600nits[typ] HDR10	700nits[typ], 1100nits[peak] HDR10+ Always-On Display
🤖 Operating System
	Redmi K20 (128GB)	Asus Zenfone 8 (128GB/8GB)
System version	Android 9.0 Pie	Android 11
Firmware update	Android 10	Android 13
User Interface	feature not registered	ZenUI 8 / 9 / 10
⚙️ Processor
	Redmi K20 (128GB)	Asus Zenfone 8 (128GB/8GB)
Chipset	64bit: Qualcomm Snapdragon 730 (SM7150-AA) (8nm)	64bit: Qualcomm Snapdragon 888 (SM8350) (5nm)
CPU	Octa-core, 2 processors: 2x 2.2GHz Kryo 470 Gold (Dual-core) 6x 1.8GHz Kryo 470 Silver (Hexa-core)	Octa-core, 3 processors: 1x 2.84GHz Kryo 680 (Single-core) 3x 2.42GHz Kryo 680 (Triple-core) 4x 1.8GHz Kryo 680 (Quad-core)
GPU graphical controller	Qualcomm Adreno 618 (610MHz)	Qualcomm Adreno 660 (840MHz)
Performance (benchmark)	feature not registered	AnTuTu: 676001 (v8), 799738 (v9) Geekbench: 3604 (v5.1) GFXBench: 61fps (ES 3.1 onscreen)
💽 Memory and storage
	Redmi K20 (128GB)	Asus Zenfone 8 (128GB/8GB)
RAM memory	6GB LPDDR4X	8GB LPDDR5
Internal storage	128GB (109GB available) UFS 2.1	128GB (107GB available) UFS 3.1
External storage	Not supported	Not supported
📶 Mobile networks
	Redmi K20 (128GB)	Asus Zenfone 8 (128GB/8GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card	Dual-SIM Standby - Call active on one sim card
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	800/150 Mbps	2000/1024 Mbps
Network technology	2G, 3G, 4G	2G, 3G, 4G, 5G
Frequency, bands	Expand band details Collapse details
GSM MHz band	Quad-Band 850/900/1800/1900	Quad-Band 850/900/1800/1900
Primary 2G network	CDMA 800 (China), GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	MZB7754IN, MZB7755IN, MZB7756IN version: UMTS 850/900/1900/2100 M1903F10A, M1903F10C, M1903F10T version: CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1900/2100	UMTS 800/850/900/1700/1900/2100
Primary 4G network	LTE Cat15/13 VoLTE MZB7754IN, MZB7755IN, MZB7756IN version: LTE (Bands 1, 3, 5, 7, 8) TD-LTE (Bands 38, 40, 41) M1903F10A, M1903F10C, M1903F10T version: LTE (Bands 1, 3, 5, 7, 8) TD-LTE (Bands 34, 38, 39, 40, 41)	LTE 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)
Primary 5G network	Not supported	America 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)
Primary data network	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	Not supported	UMTS 800/850/900/1700/1900/2100
Secondary 4G network	Not supported	LTE 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)
Secondary data network	GPRS, EDGE	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
📷 Camera
	Redmi K20 (128GB)	Asus Zenfone 8 (128GB/8GB)
Back camera (main camera)	(triple camera) 48 megapixels 8MP telephoto f/2.453mm1/4"1.12µmPDAF2x-optical-zoom 13MP ultrawide f/2.412mm1/3"1.12µm	(dual camera) 64 megapixels 12MP ultrawide f/2.2112°14mm1/2.55"1.4µmPDAF
Main camera resolution	8000x6000 pixels	10120x6328 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	8K UHD (7680x4320) 24 fps
Flash	Dual-LED flash	LED flash
Focal aperture	f/1.8 (aperture)	f/1.8 (aperture)
Focal length	26mm (lens)	26mm (lens)
Sensor size	1/2" inches	1/1.73" inches
Pixel size	0.8µm pixel	0.8µm pixel
Autofocus	PDAF: phase detection autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	OIS (4-axis): Optical stabilization
Zoom	Digital and optical zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not supported	Supported
HDR	HDR photo on both cameras	HDR photo/video on both cameras
Camera extras	feature not registered	4K@120fps 1080p@240fps 720p@480fps
📸 Front camera
	Redmi K20 (128GB)	Asus Zenfone 8 (128GB/8GB)
Front camera (secondary)	20 megapixels *Motorized pop-up camera (slider)	12 megapixels
Front camera resolution	5184x3840 pixels	4000x3000 pixels
Video recording (secondary)	Full HD (1920x1080)	4K UHD (3840x2160)
Front flash	Not supported	Not supported
Focal aperture	f/2.2 (aperture)	f/2.5 (aperture)
Focal length	feature not registered	28mm (lens)
Sensor size	feature not registered	1/2.93" inches
Pixel size	0.8µm pixel	1.22µm pixel
🔉 Sound and multimedia
	Redmi K20 (128GB)	Asus Zenfone 8 (128GB/8GB)
Loudspeaker	Supported	Stereo sound 32-bit/384kHz
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	FM	FM
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, XviD	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Redmi K20 (128GB)	Asus Zenfone 8 (128GB/8GB)
USB	USB 2.0 Type-C, USB OTG On-The-Go	USB 2.0 Type-C, USB OTG On-The-Go
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	USB Type-C (reversible)
Bluetooth	5.0 + A2DP/LE	5.2 + A2DP/LE
WiFi	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot	802.11 a/b/g/n/ac/ax [wifi6E/6] (2.4GHz, 5GHz, 6GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS, NavIC
NFC	Supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Redmi K20 (128GB)	Asus Zenfone 8 (128GB/8GB)
Sensors	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (under display) Gyroscope Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (under display) Gyroscope Hall effect Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Redmi K20 (128GB)	Asus Zenfone 8 (128GB/8GB)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	4000 mAh	4000 mAh
Charger, watts	18W (9V/2A) Wired fast charging	30W Wired fast charging 5W Reverse charging by cable Quick Charge 4 USB Power Delivery 3.0
Inductive / wireless charging	feature not registered	Not supported
Talk time autonomy	feature not registered	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Redmi K20 (128GB)	Asus Zenfone 8 (128GB/8GB)
Call control	Voice dialing, Voice recorder, Voice commands	Voice dialing, Voice recorder, Voice commands
Messaging	SMS (T9), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Hands-free calling	Supported	Supported
Video calling	Supported	Supported
Ringtones	Polyphonic and customized	Polyphonic and customized
Web browser	HTML, XHTML, HTML5	HTML, XHTML, HTML5
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Not supported	Not supported
Miscellaneous	• Colors: Carbon black, Flame red, Glacier blue • MIUI 10 • HDR display • 24-bit/192kHz audio • Quick Charge 4+	• Colors: Obsidian Black, Horizon Silver
☢️ Radiation rate
	Redmi K20 (128GB)	Asus Zenfone 8 (128GB/8GB)
SAR 1.6W/kg (USA, Mexico, etc.)	1.07W/kg (head), 0.72W/kg (body)	feature not registered
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered