Xiaomi Poco X3 GT (256GB) vs Samsung Galaxy M55s (SM-M558B/DS 256GB)

Share page: Facebook Twitter WhatsApp Share page:

Side by side comparison between Xiaomi Poco X3 GT vs Samsung Galaxy M55s phones, differences, pros, cons and full specifications. What's the better?

5/20/2025 7:25 AM, updated: 5/20/2025 7:36 AM

Compare Samsung Galaxy M55s X Xiaomi Poco X3 GT (256GB) 07Points

Specifications Compare Models Pictures

6.6"
IPS

1080x2400

64
MP

16mp

8GB
RAM

Octa-core

5000
mAh

(Non removable)

13Points Samsung Galaxy M55s (SM-M558B/DS 256GB) Compare Xiaomi Poco X3 GT 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 M55s (SM-M558B/DS 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!

7 Advantages Xiaomi Poco X3 GT (256GB)	vs	13 Advantages Samsung Galaxy M55s (SM-M558B/DS 256GB)
+UFS 3.1Advantage Fastest write and read storage.	vs	UFS 2.2
+HDR10Advantage The HDR10 display provides vibrant colors and more details	vs	Not supported
+399 PPI2% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	393 PPI
+(triple camera) 64MP + 8MP + 2MP24% Higher resolution main camera	vs	(triple camera) 50MP + 8MP + 2MP
+67W49% 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	45W
+Gorilla Glass VictusAdvantage Protection against scratches on the screen lets you carry your phone with your keys	vs	Not supported
+IP53 certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example	vs	Not supported
2.6GHz 64bit Octa-core (6nm)	vs	+2.4GHz 64bit Octa-core (4nm)5% More powerful processor, you can open your applications faster
Not supported	vs	+Until 1TB microSD, microSDXCAdvantage More external storage for files using memory cards
193 grams (6.76 ounces)	vs	+180 grams (6.3 ounces)7% Lighter
8.9 millimeters (0.35 inches)	vs	+7.8 millimeters (0.31 inches)14% Thinner
TFT IPS LCD	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
6.6"	vs	+6.7"2% Larger screen
EIS: Digital stabilization	vs	+OIS: Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video
1/1.97" inches	vs	+1/1.56" inches26% The larger sensor camera lets you take photos with better depth.
(front) 16MP	vs	+(front) 50MP2 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 12	vs	+Android 15Advantage Android 15 is newer and safer
(5G SA/NSA) 2000 Mbps	vs	+(5G Sub6) 3000 Mbps50% Faster for surfing the internet and download files
Not supported	vs	+Proximity sensorAdvantage Sensors help you use the device

37 Common items in both devices

8GB LPDDR4X

256GB (230GB available) / 256GB (233GB available)

Plastic body, glass front

120Hz

16 million

1080x2400 pixels

LED flash

+30 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 Poco X3 GT (256GB)	Galaxy M55s (SM-M558B/DS 256GB)
Change model		Choose the model
Model	Poco X3 GT (256GB)	Galaxy M55s (SM-M558B/DS 256GB)
Other model names	POCO X3 GT (21061110AG)	Galaxy M55s 5G SM-M558B/Dual-SIM
Country or region available	(Global, International)	Bangladesh, India
Brand	Xiaomi	Samsung
Release date	8/19/2021, Announced: 7/28/2021	9/26/2024, Announced: 9/24/2024
Depth	8.9 millimeters (0.35 inches)	7.8 millimeters (0.31 inches)
Size (width x height)	75.9 x 163.3 millimeters (2.99 x 6.43 in)	76.5 x 163.9 millimeters (3.01 x 6.45 in)
Weight	193 grams (6.76 ounces)	180 grams (6.3 ounces)
Build, materials	Plastic body, glass front	Plastic body, glass front
Protection against water and others	IP53 certified: protection against dust and splashing	Not supported
📲 Display
	Xiaomi Poco X3 GT (256GB)	Galaxy M55s (SM-M558B/DS 256GB)
Display type	TFT IPS LCD	Super AMOLED
Screen size	6.6" inches	6.7" inches
Screen-to-body ratio	~84.9% (screen-to-body ratio)	~86.4% (screen-to-body ratio)
Display resolution	1080x2400 pixels (20:9)	1080x2400 pixels (20:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch 10-points
Pixel density (dot pitch)	399 PPI	393 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass Victus	Not supported
Refresh rate	120Hz	120Hz
Display features	450nits[typ] HDR10	Always-On Display
🤖 Operating System
	Xiaomi Poco X3 GT (256GB)	Galaxy M55s (SM-M558B/DS 256GB)
System version	Android 11	Android 14
Firmware update	Android 12	Android 15
User Interface	MIUI 12.5 / 13	One UI 6.1 / 7.0
⚙️ Processor
	Xiaomi Poco X3 GT (256GB)	Galaxy M55s (SM-M558B/DS 256GB)
Chipset	64bit: MediaTek Dimensity 1100 (MT6891Z) (6nm)	64bit: Qualcomm Snapdragon 7 Gen 1 (SM7450-AB) (4nm)
CPU	Octa-core, 2 processors: 4x 2.6GHz ARM Cortex-A78 (Quad-core) 4x 2GHz ARM Cortex-A55 (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	ARM Mali-G77 MC9 (836MHz)	Qualcomm Adreno 644 (443MHz)
Performance (benchmark)	AnTuTu: 506800 (v8), 578505 (v9) Geekbench: 2310 (v5.1) GFXBench: 38fps (ES 3.1 onscreen)	AnTuTu: 582102 (v10)
💽 Memory and storage
	Xiaomi Poco X3 GT (256GB)	Galaxy M55s (SM-M558B/DS 256GB)
RAM memory	8GB LPDDR4X	8GB LPDDR4X
Internal storage	256GB (230GB available) UFS 3.1	256GB (233GB available) UFS 2.2
External storage	Not supported	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)
📶 Mobile networks
	Xiaomi Poco X3 GT (256GB)	Galaxy M55s (SM-M558B/DS 256GB)
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	2000/1024 Mbps	3000/1024 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	GSM 850/900/1800/1900
Primary 3G network	UMTS 850/900/1700/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 28) TD-LTE (38, 40, 41, 42) 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	SA/NSA (1, 3, 28, 41, 77, 78)	SA/NSA/Sub6 (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78)
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA	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	UMTS 850/900/1700/1900/2100	UMTS 850/900/1700/1900/2100
Secondary 4G network	LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 28) TD-LTE (38, 40, 41, 42) VoLTE	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, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6
📷 Camera
	Xiaomi Poco X3 GT (256GB)	Galaxy M55s (SM-M558B/DS 256GB)
Back camera (main camera)	(triple camera) 64 megapixels 8MP ultrawide f/2.2120°1/4"1.12µm 2MP macro f/2.4	(triple camera) 50 megapixels 8MP ultrawide f/2.2123° 2MP macro f/2.4
Main camera resolution	10120x6328 pixels	8160x6120 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	4K UHD (3840x2160) 30 fps
Flash	LED flash	LED flash
Focal aperture	f/1.8 (aperture)	f/1.8 (aperture)
Focal length	26mm (lens)	feature not registered
Sensor size	1/1.97" inches	1/1.56" inches
Pixel size	0.7µm pixel	1µm pixel
Autofocus	PDAF: phase detection autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	OIS: Optical stabilization
Zoom	Only digital zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Supported	Supported
HDR	HDR photo on both cameras	HDR photo on both cameras
Camera extras	feature not registered	4K@30fps 1080p@30/60fps 720p@240fps (slow motion)
📸 Front camera
	Xiaomi Poco X3 GT (256GB)	Galaxy M55s (SM-M558B/DS 256GB)
Front camera (secondary)	16 megapixels	50 megapixels
Front camera resolution	4608x3456 pixels	8160x6120 pixels
Video recording (secondary)	Full HD (1920x1080)	4K UHD (3840x2160)
Front flash	Not supported	Not supported
Focal aperture	f/2.5 (aperture)	f/2.4 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	1/3.06" inches	feature not registered
Pixel size	1µm pixel	feature not registered
🔉 Sound and multimedia
	Xiaomi Poco X3 GT (256GB)	Galaxy M55s (SM-M558B/DS 256GB)
Loudspeaker	Stereo sound with dual speakers 24-bit/192kHz Tuned by JBL	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, XviD, MKV	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Xiaomi Poco X3 GT (256GB)	Galaxy M55s (SM-M558B/DS 256GB)
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 jack with 3.5mm jack adapter	Type-C reversible connector
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 [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS
NFC	Supported	Supported
Infrared port	Supported	Not supported
🧭 Sensors
	Xiaomi Poco X3 GT (256GB)	Galaxy M55s (SM-M558B/DS 256GB)
Sensors	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (side-mounted) Gyroscope	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (under display) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Xiaomi Poco X3 GT (256GB)	Galaxy M55s (SM-M558B/DS 256GB)
Battery type	LiPo: li-ion polymer (Non removable)	Li-Ion: lithium-ion (Non removable)
Battery capacity	5000 mAh	5000 mAh
Charger, watts	67W Wired fast charging USB Power Delivery 3.0	45W Wired fast charging
Inductive / wireless charging	Not supported	Not supported
Talk time autonomy	feature not registered	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Xiaomi Poco X3 GT (256GB)	Galaxy M55s (SM-M558B/DS 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: Black, Wave Blue, Cloud White • Protective case included	• Colors: Thunder Black, Coral Green
☢️ Radiation rate
	Xiaomi Poco X3 GT (256GB)	Galaxy M55s (SM-M558B/DS 256GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	0.93W/kg (head)
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered