Asus ROG Phone 3 (256GB/12GB) vs Xiaomi Redmi K20 (128GB)

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Side by side comparison between Asus ROG Phone 3 vs Xiaomi Redmi K20 phones, differences, pros, cons and full specifications. What's the better?

8/12/2020 9:43 PM, updated: 10/16/2021 10:03 AM

Compare Xiaomi Redmi K20 X Asus ROG Phone 3 (256GB/12GB) 19Points

Specifications Compare Models Pictures

6.59"
AMOLED

1080x2340

64
MP

24mp

12GB
RAM

Octa-core

6000
mAh

(Non removable)

07Points Xiaomi Redmi K20 (128GB) Compare Asus ROG Phone 3 X

Specifications Compare Models Pictures

6.39"
AMOLED

1080x2340

48
MP

20mp

6GB
RAM

Octa-core

4000
mAh

(Non removable)

What's the better phone? Asus ROG Phone 3 (256GB/12GB)

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!

19 Advantages Asus ROG Phone 3 (256GB/12GB)	vs	7 Advantages Xiaomi Redmi K20 (128GB)
+3.09GHz 64bit Octa-core (7nm)30% More powerful processor, you can open your applications faster	vs	2.2GHz 64bit Octa-core (8nm)
+12GB LPDDR5100% More RAM memory. Typically more responsive and better for multitasking.	vs	6GB LPDDR4X
+256GB (225GB available)106% More internal storage for applications and files	vs	128GB (109GB available)
+UFS 3.1Advantage Fastest write and read storage.	vs	UFS 2.1
+HDR10+Advantage The HDR10+ display provides vibrant colors and more details	vs	HDR10
+144Hz140% The display reproduces more frames per second because the frequency (Hertz) is higher, improves fluidity and tires your eyes less.	vs	60Hz
+1 billion62 times More colors on the screen is better quality images and videos	vs	16 million
+6.59"3% Larger screen	vs	6.39"
+(triple camera) 64MP + 13MP + 5MP19% Higher resolution main camera	vs	(triple camera) 48MP + 8MP + 13MP
+1/1.72" inches16% The larger sensor camera lets you take photos with better depth.	vs	1/2" inches
+(front) 24MP20% Higher resolution secondary camera to take pictures and selfies	vs	(front) 20MP
+8K UHD (7680x4320)3 times More image quality for recording videos with the primary camera	vs	4K UHD (3840x2160)
+5G SA/NSAAdvantage The 5G SA/NSA network is newer and faster	vs	4G LTE-A
+(5G SA/NSA) 5000 Mbps5 times Faster for surfing the internet and download files	vs	(4G LTE-A) 800 Mbps
+6000 mAh50% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	4000 mAh
+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.	vs	18W
+802.11 a/b/g/n/ac/ax [wifi6]Advantage WiFi 802.11 a/b/g/n/ac/ax [wifi6] is newer and faster	vs	802.11 a/b/g/n/ac [wifi5]
+5.1 + A2DP/LEAdvantage Bluetooth 5.1 + A2DP/LE is newer and faster	vs	5.0 + A2DP/LE
+USB 3.1 Type-C, USB OTG On-The-GoAdvantage Newer and faster USB version for transferring photos, mp3 or data.	vs	USB 2.0 Type-C, USB OTG On-The-Go
240 grams (8.4 ounces)	vs	+191 grams (6.69 ounces)26% Lighter
9.85 millimeters (0.39 inches)	vs	+8.8 millimeters (0.35 inches)12% Thinner
391 PPI	vs	+403 PPI3% Crisper display of text, images and videos because it has more pixels per inch (ppi)
LED flash	vs	+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light
Only digital zoom	vs	+Digital and optical zoomAdvantage The zoom allows for better focus and approach to take pictures
Type-C jack with 3.5mm jack adapter	vs	+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores
Not supported	vs	+FMAdvantage The radio lets you listen to your songs and sports in general

24 Common items in both devices

Aluminum frame, glass front/back

AMOLED

1080x2340 pixels

PDAF: phase detection autofocus

EIS: Digital stabilization

HDR photo on both cameras

f/1.8 (aperture)

+17 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
	Asus ROG Phone 3 (256GB/12GB)	Redmi K20 (128GB)
Change model		Choose the model
Model	ROG Phone 3 (256GB/12GB)	Redmi K20 (128GB)
Other model names	Asus ROG Phone 3 ZS661KS, ZS661KSF (12GB RAM)	Xiaomi Redmi K20 M1903F10A, M1903F10C, MZB7754IN, MZB7755IN
Country or region available	(Global, International)	China, India
Brand	Asus	Xiaomi
Release date	7/22/2020	6/1/2019
Depth	9.85 millimeters (0.39 inches)	8.8 millimeters (0.35 inches)
Size (width x height)	78 x 171 millimeters (3.07 x 6.73 in)	74.3 x 156.7 millimeters (2.93 x 6.17 in)
Weight	240 grams (8.4 ounces)	191 grams (6.69 ounces)
Build, materials	Aluminum frame, glass front/back	Aluminum frame, glass front/back
Protection against water and others	Not supported	Not supported
📲 Display
	Asus ROG Phone 3 (256GB/12GB)	Redmi K20 (128GB)
Display type	AMOLED	AMOLED
Screen size	6.59" inches	6.39" inches
Screen-to-body ratio	~79.9% (screen-to-body ratio)	~86.1% (screen-to-body ratio)
Display resolution	1080x2340 pixels (19.5:9)	1080x2340 pixels (19.5:9)
Touchscreen	Capacitive Multitouch 10-points	Capacitive Multitouch
Pixel density (dot pitch)	391 PPI	403 PPI
Colors	1 billion	16 million
Scratch-resistant glass	Gorilla Glass 6	Gorilla Glass 5
Refresh rate	144Hz	60Hz
Display features	650nits[typ] HDR10+	600nits[typ] HDR10
🤖 Operating System
	Asus ROG Phone 3 (256GB/12GB)	Redmi K20 (128GB)
System version	Android 10	Android 9.0 Pie
Firmware update	feature not registered	Android 10
User Interface	feature not registered	feature not registered
⚙️ Processor
	Asus ROG Phone 3 (256GB/12GB)	Redmi K20 (128GB)
Chipset	64bit: Qualcomm Snapdragon 865+ (SM8250-AB) (7nm)	64bit: Qualcomm Snapdragon 730 (SM7150-AA) (8nm)
CPU	Octa-core, 3 processors: 1x 3.09GHz Kryo 585 (Single-core) 3x 2.42GHz Kryo 585 (Triple-core) 4x 1.8GHz Kryo 585 (Quad-core)	Octa-core, 2 processors: 2x 2.2GHz Kryo 470 Gold (Dual-core) 6x 1.8GHz Kryo 470 Silver (Hexa-core)
GPU graphical controller	Qualcomm Adreno 650 (250-646MHz)	Qualcomm Adreno 618 (610MHz)
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Asus ROG Phone 3 (256GB/12GB)	Redmi K20 (128GB)
RAM memory	12GB LPDDR5	6GB LPDDR4X
Internal storage	256GB (225GB available) UFS 3.1	128GB (109GB available) UFS 2.1
External storage	Not supported	Not supported
📶 Mobile networks
	Asus ROG Phone 3 (256GB/12GB)	Redmi K20 (128GB)
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	5000/150 Mbps	800/150 Mbps
Network technology	2G, 3G, 4G, 5G	2G, 3G, 4G
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, GSM 850/900/1800/1900	CDMA 800 (China), GSM 850/900/1800/1900
Primary 3G network	CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 800/850/900/1700/1900/2100	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
Primary 4G network	LTE Cat20 VoLTE A version: LTE (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 66, 71) TD-LTE (34, 38, 39, 40, 41, 42, 48) B version: LTE (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (34, 38, 39, 40, 41)	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)
Primary 5G network	A version: SA/NSA (1, 2, 3, 5, 28, 41, 66, 71, 77, 78, 79) B version: SA/NSA (41, 77, 78, 79)	Not supported
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, SA/NSA	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
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS, EDGE	GPRS, EDGE
📷 Camera
	Asus ROG Phone 3 (256GB/12GB)	Redmi K20 (128GB)
Back camera (main camera)	(triple camera) 64 megapixels 13MP ultrawide f/2.4125°11mm 5MP macro f/2.0	(triple camera) 48 megapixels 8MP telephoto f/2.453mm1/4"1.12µmPDAF2x-optical-zoom 13MP ultrawide f/2.412mm1/3"1.12µm
Main camera resolution	10120x6328 pixels	8000x6000 pixels
Video recording (primary)	8K UHD (7680x4320) 30 fps	4K UHD (3840x2160) 30 fps
Flash	LED flash	Dual-LED flash
Focal aperture	f/1.8 (aperture)	f/1.8 (aperture)
Focal length	26mm lens	26mm lens
Sensor size	1/1.72" inches	1/2" 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	EIS: Digital stabilization
Zoom	Only digital zoom	Digital and optical zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not supported	Not supported
HDR	HDR photo on both cameras	HDR photo on both cameras
Camera extras	feature not registered	feature not registered
📸 Front camera
	Asus ROG Phone 3 (256GB/12GB)	Redmi K20 (128GB)
Front camera (secondary)	24 megapixels	20 megapixels *Motorized pop-up camera (slider)
Front camera resolution	5632x4224 pixels	5184x3840 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.0 (aperture)	f/2.2 (aperture)
Focal length	27mm lens	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	0.9µm pixel	0.8µm pixel
🔉 Sound and multimedia
	Asus ROG Phone 3 (256GB/12GB)	Redmi K20 (128GB)
Loudspeaker	Supported	Supported
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	Not supported	FM
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, XviD, MKV	MP4, H.265, H.264, H.263, XviD
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Asus ROG Phone 3 (256GB/12GB)	Redmi K20 (128GB)
USB	USB 3.1 Type-C, USB OTG On-The-Go	USB 2.0 Type-C, USB OTG On-The-Go
Audio output	Type-C jack with 3.5mm jack adapter	3.5mm jack
TV output	USB Type-C (reversible)	Not supported
Bluetooth	5.1 + A2DP/LE	5.0 + A2DP/LE
WiFi	802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, GALILEO, QZSS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Asus ROG Phone 3 (256GB/12GB)	Redmi K20 (128GB)
Sensors	Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gesture Gyroscope Hall effect Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Asus ROG Phone 3 (256GB/12GB)	Redmi K20 (128GB)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	6000 mAh	4000 mAh
Charger, watts	30W Wired fast charging 10W Reverse charging by cable Quick Charge 3/4 USB Power Delivery 3.0	18W (9V/2A) Wired fast charging
Inductive / wireless charging	Not supported	feature not registered
Talk time autonomy	feature not registered	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Asus ROG Phone 3 (256GB/12GB)	Redmi K20 (128GB)
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: Black glare • ROG UI (Republic Of Gamers) • Always-On display • DTS:X stereo speakers (2 amplifiers) • 24-bit/192kHz audio • AeroActive Cooler 3	• Colors: Carbon black, Flame red, Glacier blue • MIUI 10 • HDR display • 24-bit/192kHz audio • Quick Charge 4+
☢️ Radiation rate
	Asus ROG Phone 3 (256GB/12GB)	Redmi K20 (128GB)
SAR 1.6W/kg (USA, Mexico, etc.)	0.74W/kg (head), 1.5W/kg (body)	1.07W/kg (head), 0.72W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered