Asus ROG Phone 2 (128GB) vs Samsung Galaxy M55s (SM-M558B/DS 256GB)

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Side by side comparison between Asus ROG Phone 2 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 Asus ROG Phone 2 (128GB) 10Points

Specifications Compare Models Pictures

6.59"
AMOLED

1080x2340

48
MP

24mp

8GB
RAM

Octa-core

6000
mAh

(Non removable)

18Points Samsung Galaxy M55s (SM-M558B/DS 256GB) Compare Asus ROG Phone 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 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!

10 Advantages Asus ROG Phone 2 (128GB)	vs	18 Advantages Samsung Galaxy M55s (SM-M558B/DS 256GB)
+UFS 3.0Advantage Fastest write and read storage.	vs	UFS 2.2
+Aluminum frame, glass front/backAdvantage More resistant material	vs	Plastic body, glass front
+HDR10Advantage The HDR10 display provides vibrant colors and more details	vs	Not supported
+1 billion62 times More colors on the screen is better quality images and videos	vs	16 million
+(dual camera) 48MP + 13MP2% Higher resolution main camera	vs	(triple camera) 50MP + 8MP + 2MP
+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light	vs	LED flash
+6000 mAh20% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	5000 mAh
+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores	vs	Type-C reversible connector
+USB 3.1 Type-C reversible connectorAdvantage Newer and faster USB version for transferring photos, mp3 or data.	vs	USB 2.0 Type-C, USB OTG On-The-Go
+Gorilla Glass 6Advantage Protection against scratches on the screen lets you carry your phone with your keys	vs	Not supported
2.96GHz 64bit Octa-core (7nm)	vs	+2.4GHz 64bit Octa-core (4nm)1% More powerful processor, you can open your applications faster
128GB (107GB available)	vs	+256GB (233GB available)118% More internal storage for applications and files
Not supported	vs	+Until 1TB microSD, microSDXCAdvantage More external storage for files using memory cards
240 grams (8.4 ounces)	vs	+180 grams (6.3 ounces)33% Lighter
9.78 millimeters (0.39 inches)	vs	+7.8 millimeters (0.31 inches)25% Thinner
AMOLED	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
1080x2340 pixels	vs	+1080x2400 pixels3% Higher resolution screen
391 PPI	vs	+393 PPI1% Crisper display of text, images and videos because it has more pixels per inch (ppi)
6.59"	vs	+6.7"2% Larger screen
EIS: Digital stabilization	vs	+OIS: Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video
1/2" inches	vs	+1/1.56" inches28% The larger sensor camera lets you take photos with better depth.
(front) 24MP	vs	+(front) 50MP110% 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 11	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) 1200 Mbps	vs	+(5G Sub6) 3000 Mbps150% Faster for surfing the internet and download files
30W	vs	+45W50% 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.
5.0 + A2DP/LE	vs	+5.2 + A2DP/LEAdvantage Bluetooth 5.2 + A2DP/LE is newer and faster

28 Common items in both devices

8GB LPDDR4X

120Hz

Only digital zoom

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

BSI sensor

HDR photo on both cameras

f/1.8 (aperture)

+21 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 2 (128GB)	Galaxy M55s (SM-M558B/DS 256GB)
Change model		Choose the model
Model	ROG Phone 2 (128GB)	Galaxy M55s (SM-M558B/DS 256GB)
Other model names	Asus ROG Phone II ZS660KL (128GB + 8GB RAM)	Galaxy M55s 5G SM-M558B/Dual-SIM
Country or region available	(Global, International)	Bangladesh, India
Brand	Asus	Samsung
Release date	8/1/2019, Announced: 7/22/2019	9/26/2024, Announced: 9/24/2024
Depth	9.78 millimeters (0.39 inches)	7.8 millimeters (0.31 inches)
Size (width x height)	77.6 x 170.99 millimeters (3.06 x 6.73 in)	76.5 x 163.9 millimeters (3.01 x 6.45 in)
Weight	240 grams (8.4 ounces)	180 grams (6.3 ounces)
Build, materials	Aluminum frame, glass front/back Back: Gorilla Glass 3	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Asus ROG Phone 2 (128GB)	Galaxy M55s (SM-M558B/DS 256GB)
Display type	AMOLED	Super AMOLED
Screen size	6.59" inches	6.7" inches
Screen-to-body ratio	~80.3% (screen-to-body ratio)	~86.4% (screen-to-body ratio)
Display resolution	1080x2340 pixels (19.5:9)	1080x2400 pixels (20:9)
Touchscreen	Capacitive Multitouch 10-points	Capacitive Multitouch 10-points
Pixel density (dot pitch)	391 PPI	393 PPI
Colors	1 billion	16 million
Scratch-resistant glass	Gorilla Glass 6	Not supported
Refresh rate	120Hz	120Hz
Display features	600nits[typ] HDR10 108% DCI-P3 1ms response	Always-On Display
🤖 Operating System
	Asus ROG Phone 2 (128GB)	Galaxy M55s (SM-M558B/DS 256GB)
System version	Android 9.0 Pie	Android 14
Firmware update	Android 11	Android 15
User Interface	ROG UI	One UI 6.1 / 7.0
⚙️ Processor
	Asus ROG Phone 2 (128GB)	Galaxy M55s (SM-M558B/DS 256GB)
Chipset	64bit: Qualcomm Snapdragon 855+ (SM8150-AC) (7nm)	64bit: Qualcomm Snapdragon 7 Gen 1 (SM7450-AB) (4nm)
CPU	Octa-core, 3 processors: 1x 2.96GHz Kryo 485 (Single-core) 3x 2.42GHz Kryo 485 (Triple-core) 4x 1.8GHz Kryo 485 (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 640 (672MHz)	Qualcomm Adreno 644 (443MHz)
Performance (benchmark)	AnTuTu: 398936 (v7), 483248 (v8) Geekbench: 10923 (v4.4) GFXBench: 40fps (ES 3.1 onscreen)	AnTuTu: 582102 (v10)
💽 Memory and storage
	Asus ROG Phone 2 (128GB)	Galaxy M55s (SM-M558B/DS 256GB)
RAM memory	8GB LPDDR4X	8GB LPDDR4X
Internal storage	128GB (107GB available) UFS 3.0	256GB (233GB available) UFS 2.2
External storage	Not supported	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)
📶 Mobile networks
	Asus ROG Phone 2 (128GB)	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	1200/150 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	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	UMTS 850/900/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat18 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 28, 29, 32, 34) TD-LTE (38, 39, 40, 41, 46)	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, UMTS, 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	UMTS 850/900/1900/2100	UMTS 850/900/1700/1900/2100
Secondary 4G network	LTE Cat18 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 28, 29, 32, 34) TD-LTE (38, 39, 40, 41, 46)	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
	Asus ROG Phone 2 (128GB)	Galaxy M55s (SM-M558B/DS 256GB)
Back camera (main camera)	(dual camera) 48 megapixels 13MP ultrawide f/2.411mm125°	(triple camera) 50 megapixels 8MP ultrawide f/2.2123° 2MP macro f/2.4
Main camera resolution	8000x6000 pixels	8160x6120 pixels
Video recording (primary)	4K UHD (3840x2160) 60 fps	4K UHD (3840x2160) 30 fps
Flash	Dual-LED flash	LED flash
Focal aperture	f/1.8 (aperture)	f/1.8 (aperture)
Focal length	26mm (lens)	feature not registered
Sensor size	1/2" inches	1/1.56" inches
Pixel size	0.8µm pixel	1µm pixel
Autofocus	LDAF/PDAF: laser/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	4K@30/60fps 1080p@30/60 1080p@240fps (slow motion) 720p@480fps (slow motion) Sony IMX586 sensor	4K@30fps 1080p@30/60fps 720p@240fps (slow motion)
📸 Front camera
	Asus ROG Phone 2 (128GB)	Galaxy M55s (SM-M558B/DS 256GB)
Front camera (secondary)	24 megapixels	50 megapixels
Front camera resolution	5632x4224 pixels	8160x6120 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	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	0.9µm pixel	feature not registered
🔉 Sound and multimedia
	Asus ROG Phone 2 (128GB)	Galaxy M55s (SM-M558B/DS 256GB)
Loudspeaker	Stereo sound with dual speakers 24-bit/192kHz DTS:X	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	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Asus ROG Phone 2 (128GB)	Galaxy M55s (SM-M558B/DS 256GB)
USB	USB 3.1 Type-C reversible connector	USB 2.0 Type-C, USB OTG On-The-Go
Audio output	3.5mm jack	Type-C reversible connector
TV output	USB Type-C (reversible)	USB Type-C (reversible)
Bluetooth	5.0 + A2DP/LE	5.2 + A2DP/LE
WiFi	802.11 a/b/g/n/ac/ad [wifi5/ad] (2.4GHz, 5GHz, 60GHz) + 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	Not supported	Not supported
🧭 Sensors
	Asus ROG Phone 2 (128GB)	Galaxy M55s (SM-M558B/DS 256GB)
Sensors	Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) 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 2 (128GB)	Galaxy M55s (SM-M558B/DS 256GB)
Battery type	LiPo: li-ion polymer (Non removable)	Li-Ion: lithium-ion (Non removable)
Battery capacity	6000 mAh	5000 mAh
Charger, watts	30W (10V/3A) Wired fast charging 10W Reverse charging by cable Quick Charge 4	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
	Asus ROG Phone 2 (128GB)	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	• Colors: Thunder Black, Coral Green
☢️ Radiation rate
	Asus ROG Phone 2 (128GB)	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