Samsung Galaxy M55 (SM-M556E/DS 128GB) vs Xiaomi Mix 4 (512GB)

Share page: Facebook Twitter WhatsApp Share page:

Side by side comparison between Samsung Galaxy M55 vs Xiaomi Mix 4 phones, differences, pros, cons and full specifications. What's the better?

5/19/2025 11:06 AM, updated: 5/20/2025 7:29 AM

Compare Xiaomi Mix 4 X Samsung Galaxy M55 (SM-M556E/DS 128GB) 11Points

Specifications Compare Models Pictures

6.7"
AMOLED

1080x2400

50
MP

50mp

8GB
RAM

Octa-core

5000
mAh

(Non removable)

20Points Xiaomi Mix 4 (512GB) Compare Samsung Galaxy M55 X

Specifications Compare Models Pictures

6.67"
AMOLED

1080x2400

108
MP

20mp

12GB
RAM

Octa-core

4500
mAh

(Non removable)

What's the better phone? Xiaomi Mix 4 (512GB)

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!

11 Advantages Samsung Galaxy M55 (SM-M556E/DS 128GB)	vs	20 Advantages Xiaomi Mix 4 (512GB)
+Until 1TB microSD, microSDXCAdvantage More external storage for files using memory cards	vs	Not supported
+180 grams (6.3 ounces)25% Lighter	vs	225 grams (7.88 ounces)
+7.8 millimeters (0.31 inches)3% Thinner	vs	8 millimeters (0.31 inches)
+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid	vs	AMOLED
+6.7"1% Larger screen	vs	6.67"
+f/1.8 (aperture)6% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.	vs	f/1.9 (aperture)
+(front) 50MP151% Higher resolution secondary camera to take pictures and selfies	vs	(front) 20MP
+(front) 4K UHD (3840x2160)3 times More image quality for recording videos with the secondary camera	vs	(front) Full HD (1920x1080)
+Android 15Advantage Android 15 is newer and safer	vs	Android 13
+(5G Sub6) 3000 Mbps50% Faster for surfing the internet and download files	vs	(5G SA/NSA) 2000 Mbps
+5000 mAh11% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	4500 mAh
2.4GHz 64bit Octa-core (4nm)	vs	+3GHz 64bit Octa-core (5nm)1% More powerful processor, you can open your applications faster
8GB LPDDR4X	vs	+12GB LPDDR550% More RAM memory. Typically more responsive and better for multitasking.
128GB (105GB available)	vs	+512GB (464GB available)3 times More internal storage for applications and files
UFS 2.2	vs	+UFS 3.1Advantage Fastest write and read storage.
Plastic body, glass front	vs	+Aluminum body, glass front, ceramic backAdvantage More resistant material
Not supported	vs	+Dolby Vision/HDR10+Advantage The Dolby Vision/HDR10+ display provides vibrant colors and more details
16 million	vs	+1 billion62 times More colors on the screen is better quality images and videos
393 PPI	vs	+395 PPI1% Crisper display of text, images and videos because it has more pixels per inch (ppi)
(triple camera) 50MP + 8MP + 2MP	vs	+(triple camera) 108MP + 13MP + 8MP115% Higher resolution main camera
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
1/1.56" inches	vs	+1/1.33" inches17% 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
Not supported	vs	+Heart rateAdvantage Sensors help you use the device
Not supported	vs	+UWB (Ultra Wideband)Advantage Sensors help you use the device
45W	vs	+120W167% 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.
Not supported	vs	+Qi wireless chargingAdvantage Wireless charging is another way to charge the battery.
802.11 a/b/g/n/ac/ax [wifi6]	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
Not supported	vs	+Gorilla Glass VictusAdvantage Protection against scratches on the screen lets you carry your phone with your keys
Not supported	vs	+IP53 certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example

29 Common items in both devices

120Hz

1080x2400 pixels

PDAF: phase detection autofocus / LDAF/PDAF: laser/phase detection autofocus

OIS: Optical stabilization

BSI sensor

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

5G Sub6 / 5G SA/NSA

+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
	Galaxy M55 (SM-M556E/DS 128GB)	Xiaomi Mix 4 (512GB)
Change model		Choose the model
Model	Galaxy M55 (SM-M556E/DS 128GB)	Mix 4 (512GB)
Other model names	Galaxy M55 5G SM-M556E/Dual-SIM	小米MIX 4 2106118C (12GB RAM)
Country or region available	(Europe), Russia	(Global, International)
Brand	Samsung	Xiaomi
Release date	3/28/2024	8/16/2021, Announced: 8/10/2021
Depth	7.8 millimeters (0.31 inches)	8 millimeters (0.31 inches)
Size (width x height)	76.5 x 163.9 millimeters (3.01 x 6.45 in)	75.35 x 162.65 millimeters (2.97 x 6.4 in)
Weight	180 grams (6.3 ounces)	225 grams (7.88 ounces)
Build, materials	Plastic body, glass front	Aluminum body, glass front, ceramic back
Protection against water and others	Not supported	IP53 certified: protection against dust and splashing
📲 Display
	Galaxy M55 (SM-M556E/DS 128GB)	Xiaomi Mix 4 (512GB)
Display type	Super AMOLED	AMOLED
Screen size	6.7" inches	6.67" inches
Screen-to-body ratio	~86.4% (screen-to-body ratio)	~87.6% (screen-to-body ratio)
Display resolution	1080x2400 pixels (20:9)	1080x2400 pixels (20:9)
Touchscreen	Capacitive Multitouch 10-points	Capacitive Multitouch
Pixel density (dot pitch)	393 PPI	395 PPI
Colors	16 million	1 billion
Scratch-resistant glass	Not supported	Gorilla Glass Victus
Refresh rate	120Hz	120Hz
Display features	Always-On Display	Dolby Vision/HDR10+ Touch Sampling Rate: 480Hz
🤖 Operating System
	Galaxy M55 (SM-M556E/DS 128GB)	Xiaomi Mix 4 (512GB)
System version	Android 14	Android 11
Firmware update	Android 15	Android 13
User Interface	One UI 6.1 / 7.0	MIUI 12.5 / 13
⚙️ Processor
	Galaxy M55 (SM-M556E/DS 128GB)	Xiaomi Mix 4 (512GB)
Chipset	64bit: Qualcomm Snapdragon 7 Gen 1 (SM7450-AB) (4nm)	64bit: Qualcomm Snapdragon 888+ (SM8350-AC) (5nm)
CPU	Octa-core, 3 processors: 1x 2.4GHz ARM Cortex-A710 (Single-core) 3x 2.36GHz ARM Cortex-A710 (Triple-core) 4x 1.8GHz ARM Cortex-A510 (Quad-core)	Octa-core, 3 processors: 1x 3GHz Kryo 680 (Single-core) 3x 2.42GHz Kryo 680 (Triple-core) 4x 1.8GHz Kryo 680 (Quad-core)
GPU graphical controller	Qualcomm Adreno 644 (443MHz)	Qualcomm Adreno 660 (840MHz)
Performance (benchmark)	AnTuTu: 582102 (v10)	AnTuTu: 798010 (v9)
💽 Memory and storage
	Galaxy M55 (SM-M556E/DS 128GB)	Xiaomi Mix 4 (512GB)
RAM memory	8GB LPDDR4X	12GB LPDDR5
Internal storage	128GB (105GB available) UFS 2.2	512GB (464GB available) UFS 3.1
External storage	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)	Not supported
📶 Mobile networks
	Galaxy M55 (SM-M556E/DS 128GB)	Xiaomi Mix 4 (512GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot)	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	3000/1024 Mbps	2000/1024 Mbps
Network technology	2G, 3G, 4G, 5G	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	GSM 850/900/1800/1900	CDMA 800, GSM 850/900/1800/1900
Primary 3G network	UMTS 850/900/1700/1900/2100	CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat18 (1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 25, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE	LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28) TD-LTE (34, 38, 39, 40, 41, 42) VoLTE
Primary 5G network	SA/NSA/Sub6 (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78)	SA/NSA/Sub6 (1, 3, 5, 8, 28, 41, 77, 78, 79)
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, 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	UMTS 850/900/1700/1900/2100	UMTS 850/900/1700/1900/2100
Secondary 4G network	LTE Cat18 (1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 25, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE	LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28) TD-LTE (34, 38, 39, 40, 41, 42) VoLTE
Secondary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA
📷 Camera
	Galaxy M55 (SM-M556E/DS 128GB)	Xiaomi Mix 4 (512GB)
Back camera (main camera)	(triple camera) 50 megapixels 8MP ultrawide f/2.2123° 2MP macro f/2.4	(triple camera) 108 megapixels 13MP ultrawide f/2.212mm123°1/3.06"1.12µm 8MP periscope telephoto f/4.1120mmPDAFOIS5x-optical-zoom
Main camera resolution	8160x6120 pixels	12000x9000 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	8K UHD (7680x4320) 24 fps
Flash	LED flash	Dual-LED flash
Focal aperture	f/1.8 (aperture)	f/1.9 (aperture)
Focal length	feature not registered	24mm (lens)
Sensor size	1/1.56" inches	1/1.33" inches
Pixel size	1µm pixel	0.8µm pixel
Autofocus	PDAF: phase detection autofocus	LDAF/PDAF: laser/phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	OIS: Optical stabilization	OIS: Optical stabilization
Zoom	Only digital zoom	Digital and optical zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Supported	Supported
HDR	HDR photo on both cameras	HDR photo/video on both cameras
Camera extras	4K@30fps 1080p@30/60fps 720p@240fps (slow motion)	4K@30/60fps 1080p@30/60/120/480fps
📸 Front camera
	Galaxy M55 (SM-M556E/DS 128GB)	Xiaomi Mix 4 (512GB)
Front camera (secondary)	50 megapixels	20 megapixels
Front camera resolution	8160x6120 pixels	5184x3840 pixels
Video recording (secondary)	4K UHD (3840x2160)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.4 (aperture)	f/3.4 (aperture)
Focal length	feature not registered	27mm (lens)
Sensor size	feature not registered	1/0.8" inches
Pixel size	feature not registered	0.8µm pixel
🔉 Sound and multimedia
	Galaxy M55 (SM-M556E/DS 128GB)	Xiaomi Mix 4 (512GB)
Loudspeaker	Stereo sound	Stereo sound 24-bit/192kHz Tuned by Harman Kardon
Active noise cancellation	2 microphones	2 microphones or more
Radio	Not supported	Not supported
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, XviD, MKV	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Galaxy M55 (SM-M556E/DS 128GB)	Xiaomi Mix 4 (512GB)
USB	USB 2.0 Type-C, USB OTG On-The-Go	USB 2.0 Type-C, USB OTG On-The-Go
Audio output	Type-C reversible connector	Type-C jack with 3.5mm jack adapter
TV output	USB Type-C (reversible)	USB Type-C (reversible)
Bluetooth	5.2 + A2DP/LE	5.2 + 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/ax [wifi6E/6] (2.4GHz, 5GHz, 6GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS, NavIC
NFC	Supported	Supported
Infrared port	Not supported	Supported
🧭 Sensors
	Galaxy M55 (SM-M556E/DS 128GB)	Xiaomi Mix 4 (512GB)
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 Heart rate Proximity sensor UWB (Ultra Wideband)
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy M55 (SM-M556E/DS 128GB)	Xiaomi Mix 4 (512GB)
Battery type	Li-Ion: lithium-ion (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	5000 mAh	4500 mAh
Charger, watts	45W Wired fast charging	120W Wired fast charging Reverse charging by cable Quick Charge 4 USB Power Delivery 3.0
Inductive / wireless charging	Not supported	50W Qi wireless charging 10W Reverse wireless charging
Talk time autonomy	feature not registered	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Galaxy M55 (SM-M556E/DS 128GB)	Xiaomi Mix 4 (512GB)
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: Dark Blue, Light Green	• Colors: Ceramic Black, Ceramic White, Shadow Gray • Silicone case included • Screen protector included
☢️ Radiation rate
	Galaxy M55 (SM-M556E/DS 128GB)	Xiaomi Mix 4 (512GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	feature not registered
SAR 2W/kg (Europe, UK, etc.)	0.81W/kg (head), 1.18W/kg (body)	feature not registered