Xiaomi Redmi K20 (64GB) vs Samsung Galaxy Z Flip 4 (SM-F721U 256GB)

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Side by side comparison between Xiaomi Redmi K20 vs Samsung Galaxy Z Flip 4 phones, differences, pros, cons and full specifications. What's the better?

1/22/2023 2:18 PM, updated: 11/21/2023 4:32 AM

Compare Samsung Galaxy Z Flip 4 X Xiaomi Redmi K20 (64GB) 08Points

Specifications Compare Models Pictures

6.39"
AMOLED

1080x2340

48
MP

20mp

6GB
RAM

Octa-core

4000
mAh

(Non removable)

25Points Samsung Galaxy Z Flip 4 (SM-F721U 256GB) Compare Xiaomi Redmi K20 X

Specifications Compare Models Pictures

6.7"
AMOLED

1080x2640

12.2
MP

10mp

8GB
RAM

Octa-core

3700
mAh

(Non removable)

What's the better phone? Samsung Galaxy Z Flip 4 (SM-F721U 256GB)

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!

8 Advantages Xiaomi Redmi K20 (64GB)	vs	25 Advantages Samsung Galaxy Z Flip 4 (SM-F721U 256GB)
+(triple camera) 48MP + 8MP + 13MP185% Higher resolution main camera	vs	(dual camera) 12.2MP + 12MP
+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) 20MP98% Higher resolution secondary camera to take pictures and selfies	vs	(front) 10MP
+4000 mAh8% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	3700 mAh
+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores	vs	Type-C reversible connector
+FMAdvantage The radio lets you listen to your songs and sports in general	vs	Not supported
+Gorilla Glass 5Advantage Protection against scratches on the screen lets you carry your phone with your keys	vs	Not supported
2.2GHz 64bit Octa-core (8nm)	vs	+3.19GHz 64bit Octa-core (4nm)41% More powerful processor, you can open your applications faster
6GB LPDDR4X	vs	+8GB LPDDR533% More RAM memory. Typically more responsive and better for multitasking.
64GB (49GB available)	vs	+256GB (218GB available)3 times More internal storage for applications and files
UFS 2.1	vs	+UFS 3.1Advantage Fastest write and read storage.
191 grams (6.69 ounces)	vs	+187 grams (6.55 ounces)2% Lighter
8.8 millimeters (0.35 inches)	vs	+6.9 millimeters (0.27 inches)28% Thinner
AMOLED	vs	+Dynamic AMOLEDAdvantage Dynamic 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	+1080x2640 pixels13% Higher resolution screen
403 PPI	vs	+426 PPI6% Crisper display of text, images and videos because it has more pixels per inch (ppi)
6.39"	vs	+6.7"5% Larger screen
EIS: Digital stabilization	vs	+OIS: Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video
1/2" inches	vs	+1/1.76" inches14% The larger sensor camera lets you take photos with better depth.
(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 14Advantage Android 14 is newer and safer
4G LTE-A	vs	+5G mmWaveAdvantage The 5G mmWave network is newer and faster
(4G LTE-A) 800 Mbps	vs	+(5G mmWave) 5000 Mbps5 times Faster for surfing the internet and download files
Not supported	vs	+BarometerAdvantage Sensors help you use the device
18W	vs	+25W39% 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.
2 slots (Dual-SIM)	vs	+1 slot (Single-SIM) + e-SIM (Eletronic)Advantage You can have more mobile carriers/operators on the same device.
802.11 a/b/g/n/ac [wifi5]	vs	+802.11 a/b/g/n/ac/ax [wifi6]Advantage WiFi 802.11 a/b/g/n/ac/ax [wifi6] is newer and faster
Not supported	vs	+DLNAAdvantage With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.
5.0 + A2DP/LE	vs	+5.2 + A2DP/LEAdvantage Bluetooth 5.2 + A2DP/LE is newer and faster
Not supported	vs	+IPX8 certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example

20 Common items in both devices

Aluminum frame, glass front/back / Aluminum frame, flexible plastic screen, glass back

16 million

PDAF: phase detection autofocus

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

f/1.8 (aperture)

4K UHD (3840x2160)

Capacitive

+13 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 (64GB)	Galaxy Z Flip 4 (SM-F721U 256GB)
Change model		Choose the model
Model	Redmi K20 (64GB)	Galaxy Z Flip 4 (SM-F721U 256GB)
Other model names	Xiaomi Redmi K20 M1903F10A, M1903F10C, MZB7754IN, MZB7755IN	Galaxy Z Flip4 5G (SM-F721U1)
Country or region available	China, India	USA
Brand	Xiaomi	Samsung
Release date	6/1/2019	8/25/2022, Announced: 8/10/2022
Depth	8.8 millimeters (0.35 inches)	6.9 millimeters (0.27 inches)
Size (width x height)	74.3 x 156.7 millimeters (2.93 x 6.17 in)	71.9 x 165.2 millimeters (2.83 x 6.5 in)
Weight	191 grams (6.69 ounces)	187 grams (6.55 ounces)
Build, materials	Aluminum frame, glass front/back	Aluminum frame, flexible plastic screen, glass back Back: Gorilla Glass Victus+ Folded: 15.9 x 71.9 x 84.9 mm
Protection against water and others	Not supported	IPX8 certified: water resistant up to 1.5 meters and 30min
📲 Display
	Redmi K20 (64GB)	Galaxy Z Flip 4 (SM-F721U 256GB)
Display type	AMOLED	Dynamic AMOLED
Screen size	6.39" inches	6.7" inches
Screen-to-body ratio	~86.1% (screen-to-body ratio)	~85.4% (screen-to-body ratio)
Display resolution	1080x2340 pixels (19.5:9)	1080x2640 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	403 PPI	426 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 5	Not supported
Refresh rate	60Hz	120Hz
Display features	600nits[typ] HDR10	1200nits[peak] HDR10+ Always-On Display Extra display: Super AMOLED 1.9" (260x512), Gorilla Glass Victus+
🤖 Operating System
	Redmi K20 (64GB)	Galaxy Z Flip 4 (SM-F721U 256GB)
System version	Android 9.0 Pie	Android 12
Firmware update	Android 10	Android 14
User Interface	feature not registered	One UI 4.1 / 5.1 / 6.0
⚙️ Processor
	Redmi K20 (64GB)	Galaxy Z Flip 4 (SM-F721U 256GB)
Chipset	64bit: Qualcomm Snapdragon 730 (SM7150-AA) (8nm)	64bit: Qualcomm Snapdragon 8+ Gen 1 (SM8475) (4nm)
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 3.19GHz ARM Cortex-X2 (Single-core) 3x 2.75GHz ARM Cortex-A710 (Triple-core) 4x 2GHz ARM Cortex-A510 (Quad-core)
GPU graphical controller	Qualcomm Adreno 618 (610MHz)	Qualcomm Adreno 730 (818MHz)
Performance (benchmark)	feature not registered	AnTuTu: 685765 (v8), 800001 (v9) Geekbench: 3913 (v5.1) GFXBench: 74fps (ES 3.1 onscreen)
💽 Memory and storage
	Redmi K20 (64GB)	Galaxy Z Flip 4 (SM-F721U 256GB)
RAM memory	6GB LPDDR4X	8GB LPDDR5
Internal storage	64GB (49GB available) UFS 2.1	256GB (218GB available) UFS 3.1
External storage	Not supported	Not supported
📶 Mobile networks
	Redmi K20 (64GB)	Galaxy Z Flip 4 (SM-F721U 256GB)
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)	1 slot (Single-SIM) nano-SIM (4FF) + e-SIM
Maximum Download / Upload	800/150 Mbps	5000/1024 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	CDMA 800/1900, 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	CDMA2000 1xEV-DO UMTS 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 (1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71) TD-LTE (38, 39, 40, 41, 46, 48) VoLTE
Primary 5G network	Not supported	SA/NSA/Sub6 (2, 5, 25, 41, 66, 71) mmWave (260, 261)
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, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6, mmWave
Secondary 2G network	GSM 850/900/1800/1900	CDMA 800/1900, GSM 850/900/1800/1900
Secondary 3G network	Not supported	CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100
Secondary 4G network	Not supported	LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71) TD-LTE (38, 39, 40, 41, 46, 48) VoLTE
Secondary data network	GPRS, EDGE	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6, mmWave
📷 Camera
	Redmi K20 (64GB)	Galaxy Z Flip 4 (SM-F721U 256GB)
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) 12.2 megapixels 12MP ultrawide f/2.2123°1.12µm
Main camera resolution	8000x6000 pixels	4032x3024 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	4K UHD (3840x2160) 60 fps
Flash	Dual-LED flash	LED flash
Focal aperture	f/1.8 (aperture)	f/1.8 (aperture)
Focal length	26mm lens	24mm lens
Sensor size	1/2" inches	1/1.76" inches
Pixel size	0.8µm pixel	1.8µm pixel
Autofocus	PDAF: phase detection autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	OIS: 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@30/60fps 1080p@30/60/240fps 720p@960fps HDR10+ Slow motion
📸 Front camera
	Redmi K20 (64GB)	Galaxy Z Flip 4 (SM-F721U 256GB)
Front camera (secondary)	20 megapixels *Motorized pop-up camera (slider)	10 megapixels
Front camera resolution	5184x3840 pixels	3872x2592 pixels
Video recording (secondary)	Full HD (1920x1080)	4K UHD (3840x2160)
Front flash	Not supported	Not supported
Focal aperture	f/2.2 (aperture)	f/2.4 (aperture)
Focal length	feature not registered	26mm lens
Sensor size	feature not registered	1/3" inches
Pixel size	0.8µm pixel	1.22µm pixel
🔉 Sound and multimedia
	Redmi K20 (64GB)	Galaxy Z Flip 4 (SM-F721U 256GB)
Loudspeaker	Supported	Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	FM	Not supported
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 (64GB)	Galaxy Z Flip 4 (SM-F721U 256GB)
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	Type-C reversible connector
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 [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Supported
GPS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Redmi K20 (64GB)	Galaxy Z Flip 4 (SM-F721U 256GB)
Sensors	Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gyroscope Proximity sensor	Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (side-mounted) Gyroscope Hall effect Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Redmi K20 (64GB)	Galaxy Z Flip 4 (SM-F721U 256GB)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	4000 mAh	3700 mAh
Charger, watts	18W (9V/2A) Wired fast charging	25W Wired fast charging Reverse charging by cable USB Power Delivery 3.0
Inductive / wireless charging	feature not registered	15W Qi Wireless charging (Qi/WPC) 4.5W Reverse wireless charging
Talk time autonomy	feature not registered	34 hours (1.4 days)
Standby	feature not registered	feature not registered
➕ Other features
	Redmi K20 (64GB)	Galaxy Z Flip 4 (SM-F721U 256GB)
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: Graphite, White, Bora Purple, Pink Gold, Blue, Yellow, Navy, Khaki, Red • Samsung Pay (Visa, MasterCard)
☢️ Radiation rate
	Redmi K20 (64GB)	Galaxy Z Flip 4 (SM-F721U 256GB)
SAR 1.6W/kg (USA, Mexico, etc.)	1.07W/kg (head), 0.72W/kg (body)	1.02W/kg (head), 0.94W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered