Xiaomi Mi Mix 2 (128GB) vs Samsung Galaxy M55 (SM-M556B/DS 128GB)

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Side by side comparison between Xiaomi Mi Mix 2 vs Samsung Galaxy M55 phones, differences, pros, cons and full specifications. What's the better?

5/19/2025 11:15 AM, updated: 5/20/2025 7:27 AM

Compare Samsung Galaxy M55 X Xiaomi Mi Mix 2 (128GB) 07Points

Specifications Compare Models Pictures

5.99"
IPS

1080x2160

12
MP

5mp

6GB
RAM

Octa-core

3400
mAh

(Non removable)

23Points Samsung Galaxy M55 (SM-M556B/DS 128GB) Compare Xiaomi Mi Mix 2 X

Specifications Compare Models Pictures

6.7"
AMOLED

1080x2400

50
MP

50mp

8GB
RAM

Octa-core

5000
mAh

(Non removable)

What's the better phone? Samsung Galaxy M55 (SM-M556B/DS 128GB)

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!

7 Advantages Xiaomi Mi Mix 2 (128GB)	vs	23 Advantages Samsung Galaxy M55 (SM-M556B/DS 128GB)
+128GB (118GB available)12% More internal storage for applications and files	vs	128GB (105GB available)
+7.7 millimeters (0.3 inches)1% Thinner	vs	7.8 millimeters (0.31 inches)
+Aluminum body, glass front, ceramic backAdvantage More resistant material	vs	Plastic body, glass front
+403 PPI3% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	393 PPI
+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light	vs	LED flash
+BarometerAdvantage Sensors help you use the device	vs	Not supported
+Gorilla Glass 4Advantage Protection against scratches on the screen lets you carry your phone with your keys	vs	Not supported
2.45GHz 64bit Octa-core (10nm)	vs	+2.4GHz 64bit Octa-core (4nm)6% More powerful processor, you can open your applications faster
6GB LPDDR4X	vs	+8GB LPDDR4X33% More RAM memory. Typically more responsive and better for multitasking.
eMMC 5.1	vs	+UFS 2.2Advantage Fastest write and read storage.
Not supported	vs	+Until 1TB microSD, microSDXCAdvantage More external storage for files using memory cards
185 grams (6.48 ounces)	vs	+180 grams (6.3 ounces)3% Lighter
TFT IPS LCD	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
1080x2160 pixels	vs	+1080x2400 pixels11% Higher resolution screen
5.99"	vs	+6.7"12% Larger screen
(back) 12MP	vs	+(triple camera) 50MP + 8MP + 2MP4 times Higher resolution main camera
Not supported	vs	+BSI sensorAdvantage The BSI sensor allows the entry of more light generating photos with more detail and brightness
HDR photo only main camera	vs	+HDR photo on both camerasAdvantage The HDR technology produced photos with more detail in dark areas
1/2.9" inches	vs	+1/1.56" inches86% The larger sensor camera lets you take photos with better depth.
f/2.0 (aperture)	vs	+f/1.8 (aperture)11% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(front) 5MP	vs	+(front) 50MP9 times Higher resolution secondary camera to take pictures and selfies
(front) Full HD (1920x1080)	vs	+(front) 4K UHD (3840x2160)3 times More image quality for recording videos with the secondary camera
Android 9.0 Pie	vs	+Android 15Advantage Android 15 is newer and safer
4G LTE-A	vs	+5G Sub6Advantage The 5G Sub6 network is newer and faster
(4G LTE-A) 600 Mbps	vs	+(5G Sub6) 3000 Mbps4 times Faster for surfing the internet and download files
Not supported	vs	+Face unlock 2DAdvantage Sensors help you use the device
3400 mAh	vs	+5000 mAh47% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
18W	vs	+45W150% 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 [wifi6]Advantage WiFi 802.11 a/b/g/n/ac/ax [wifi6] is newer and faster
5.0 + A2DP/LE	vs	+5.2 + A2DP/LEAdvantage Bluetooth 5.2 + A2DP/LE is newer and faster

24 Common items in both devices

16 million

Only digital zoom

PDAF: phase detection autofocus

OIS (4-axis): Optical stabilization / OIS: Optical stabilization

4K UHD (3840x2160)

Capacitive

Multitouch

+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
	Xiaomi Mi Mix 2 (128GB)	Galaxy M55 (SM-M556B/DS 128GB)
Change model		Choose the model
Model	Xiaomi Mi Mix 2 (128GB)	Galaxy M55 (SM-M556B/DS 128GB)
Other model names	Xiaomi Mi Mix 2 MDE5 (6GB RAM), Xiaomi Mi Mix Evo	Galaxy M55 5G SM-M556B/Dual-SIM
Country or region available	China, Hong Kong, India	(Global, International), Bangladesh, Mexico
Brand	Xiaomi	Samsung
Release date	9/1/2017	3/28/2024
Depth	7.7 millimeters (0.3 inches)	7.8 millimeters (0.31 inches)
Size (width x height)	75.5 x 151.8 millimeters (2.97 x 5.98 in)	76.5 x 163.9 millimeters (3.01 x 6.45 in)
Weight	185 grams (6.48 ounces)	180 grams (6.3 ounces)
Build, materials	Aluminum body, glass front, ceramic back	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Xiaomi Mi Mix 2 (128GB)	Galaxy M55 (SM-M556B/DS 128GB)
Display type	TFT IPS LCD	Super AMOLED
Screen size	5.99" inches	6.7" inches
Screen-to-body ratio	~80.8% (screen-to-body ratio)	~86.4% (screen-to-body ratio)
Display resolution	1080x2160 pixels	1080x2400 pixels (20:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch 10-points
Pixel density (dot pitch)	403 PPI	393 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 4	Not supported
Refresh rate	feature not registered	120Hz
Display features	feature not registered	Always-On Display
🤖 Operating System
	Xiaomi Mi Mix 2 (128GB)	Galaxy M55 (SM-M556B/DS 128GB)
System version	Android 7.1 Nougat	Android 14
Firmware update	Android 9.0 Pie	Android 15
User Interface	feature not registered	One UI 6.1 / 7.0
⚙️ Processor
	Xiaomi Mi Mix 2 (128GB)	Galaxy M55 (SM-M556B/DS 128GB)
Chipset	64bit: Qualcomm Snapdragon 835 (MSM8998) (10nm)	64bit: Qualcomm Snapdragon 7 Gen 1 (SM7450-AB) (4nm)
CPU	Octa-core, 2 processors: 4x 2.45GHz Kryo 280 (Quad-core) 4x 1.9GHz Kryo 280 (Quad-core)	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)
GPU graphical controller	Qualcomm Adreno 540 (670-710MHz)	Qualcomm Adreno 644 (443MHz)
Performance (benchmark)	feature not registered	AnTuTu: 582102 (v10)
💽 Memory and storage
	Xiaomi Mi Mix 2 (128GB)	Galaxy M55 (SM-M556B/DS 128GB)
RAM memory	6GB LPDDR4X	8GB LPDDR4X
Internal storage	128GB (118GB available) eMMC 5.1	128GB (105GB available) UFS 2.2
External storage	Not supported	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)
📶 Mobile networks
	Xiaomi Mi Mix 2 (128GB)	Galaxy M55 (SM-M556B/DS 128GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot)
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	600/50 Mbps	3000/1024 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, GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 800/850/900/1700/1800/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat12 (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 27, 28, 29, 30, 34) TD-LTE (Bands 38, 39, 40, 41) VoLTE	LTE Cat18 (1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 25, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE
Primary 5G network	Not supported	SA/NSA/Sub6 (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 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, Sub6
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	Not supported	UMTS 850/900/1700/1900/2100
Secondary 4G network	Not supported	LTE Cat18 (1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 25, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE
Secondary data network	GPRS, EDGE	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6
📷 Camera
	Xiaomi Mi Mix 2 (128GB)	Galaxy M55 (SM-M556B/DS 128GB)
Back camera (main camera)	12 megapixels	(triple camera) 50 megapixels 8MP ultrawide f/2.2123° 2MP macro f/2.4
Main camera resolution	4000x3000 pixels	8160x6120 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	4K UHD (3840x2160) 30 fps
Flash	Dual-LED flash	LED flash
Focal aperture	f/2.0 (aperture)	f/1.8 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	1/2.9" inches	1/1.56" inches
Pixel size	1.25µm pixel	1µm pixel
Autofocus	PDAF: phase detection autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	OIS (4-axis): Optical stabilization	OIS: Optical stabilization
Zoom	Only digital zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not supported	Supported
HDR	HDR photo only main camera	HDR photo on both cameras
Camera extras	feature not registered	4K@30fps 1080p@30/60fps 720p@240fps (slow motion)
📸 Front camera
	Xiaomi Mi Mix 2 (128GB)	Galaxy M55 (SM-M556B/DS 128GB)
Front camera (secondary)	5 megapixels	50 megapixels
Front camera resolution	2592x1944 pixels	8160x6120 pixels
Video recording (secondary)	Full HD (1920x1080)	4K UHD (3840x2160)
Front flash	Not supported	Not supported
Focal aperture	f/2.0 (aperture)	f/2.4 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	feature not registered
🔉 Sound and multimedia
	Xiaomi Mi Mix 2 (128GB)	Galaxy M55 (SM-M556B/DS 128GB)
Loudspeaker	Supported	Stereo sound
Active noise cancellation	2 microphones or more	2 microphones
Radio	Not supported	Not supported
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, MKV, XviD	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, OGG, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Xiaomi Mi Mix 2 (128GB)	Galaxy M55 (SM-M556B/DS 128GB)
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 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	Not supported
GPS	A-GPS, GeoTagging, GLONASS, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS
NFC	Supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Xiaomi Mi Mix 2 (128GB)	Galaxy M55 (SM-M556B/DS 128GB)
Sensors	Accelerometer Ambient light sensor Barometer Compass Fingerprint sensor (rear-mounted) Gyroscope Hall effect Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (under display) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Xiaomi Mi Mix 2 (128GB)	Galaxy M55 (SM-M556B/DS 128GB)
Battery type	Li-Ion: lithium-ion (Non removable)	Li-Ion: lithium-ion (Non removable)
Battery capacity	3400 mAh	5000 mAh
Charger, watts	18W (9V/2A) Wired fast charging	45W Wired fast charging
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
	Xiaomi Mi Mix 2 (128GB)	Galaxy M55 (SM-M556B/DS 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, White • MIUI 9 • Quick Charge 3.0 • Type-C to 3.5mm headphone jack adapter • 720p@120fps slow motion • Miracast	• Colors: Dark Blue, Light Green
☢️ Radiation rate
	Xiaomi Mi Mix 2 (128GB)	Galaxy M55 (SM-M556B/DS 128GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	0.79W/kg (head), 1.09W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	feature not registered	0.96W/kg (head), 0.98W/kg (body)