Samsung Galaxy M55 (SM-M556E/DS 128GB) vs Samsung Galaxy S2 (GT-i9100 32GB)

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Side by side comparison between Samsung Galaxy M55 vs Samsung Galaxy S2 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 Samsung Galaxy S2 X Samsung Galaxy M55 (SM-M556E/DS 128GB) 27Points

Specifications Compare Models Pictures

6.7"
AMOLED

1080x2400

50
MP

50mp

8GB
RAM

Octa-core

5000
mAh

(Non removable)

06Points Samsung Galaxy S2 (GT-i9100 32GB) Compare Samsung Galaxy M55 X

Specifications Compare Models Pictures

4.3"
AMOLED

480x800

8
MP

2mp

1GB
RAM

Dual-core

1650
mAh

(Removable)

What's the better phone? Samsung Galaxy M55 (SM-M556E/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!

27 Advantages Samsung Galaxy M55 (SM-M556E/DS 128GB)	vs	6 Advantages Samsung Galaxy S2 (GT-i9100 32GB)
+2.4GHz 64bit Octa-core (4nm)3 times More powerful processor, you can open your applications faster	vs	1.2GHz 32bit Dual-core
+8GB LPDDR4X7 times More RAM memory. Typically more responsive and better for multitasking.	vs	1GB LPDDR2
+128GB (105GB available)3 times More internal storage for applications and files	vs	32GB (28GB available)
+Until 1TB microSD, microSDXC31 times More external storage for files using memory cards	vs	Until 32GB microSD, microSDHC
+7.8 millimeters (0.31 inches)9% Thinner	vs	8.49 millimeters (0.33 inches)
+1080x2400 pixels6 times Higher resolution screen	vs	480x800 pixels
+393 PPI81% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	217 PPI
+6.7"56% Larger screen	vs	4.3"
+(triple camera) 50MP + 8MP + 2MP7 times Higher resolution main camera	vs	(back) 8MP
+OIS: Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video	vs	EIS: Digital stabilization
+HDR photo on both camerasAdvantage The HDR technology produced photos with more detail in dark areas	vs	Not supported
+1/1.56" inches105% The larger sensor camera lets you take photos with better depth.	vs	1/3.2" inches
+f/1.8 (aperture)44% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.	vs	f/2.6 (aperture)
+(front) 50MP25 times Higher resolution secondary camera to take pictures and selfies	vs	(front) 2MP
+4K UHD (3840x2160)3 times More image quality for recording videos with the primary camera	vs	Full HD (1920x1080)
+(front) 4K UHD (3840x2160)26 times More image quality for recording videos with the secondary camera	vs	(front) VGA (640x480)
+Android 15Advantage Android 15 is newer and safer	vs	Android 4.1.2 Jelly Bean
+5G Sub6Advantage The 5G Sub6 network is newer and faster	vs	3G+ HSPA+
+(5G Sub6) 3000 Mbps142 times Faster for surfing the internet and download files	vs	(3G+ HSPA+) 21 Mbps
+Face unlockAdvantage Sensors help you use the device	vs	Not supported
+Fingerprint sensor (under display)Advantage Sensors help you use the device	vs	Not supported
+5000 mAh2 times Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	1650 mAh
+2 slots (Dual-SIM) (hybrid slot/shares the same microSD slot)Advantage You can have more mobile carriers/operators on the same device.	vs	1 slot (Single-SIM) (dedicated slot)
+802.11 a/b/g/n/ac/ax [wifi6]Advantage WiFi 802.11 a/b/g/n/ac/ax [wifi6] is newer and faster	vs	802.11 a/b/g/n [wifi4]
+5.2 + A2DP/LEAdvantage Bluetooth 5.2 + A2DP/LE is newer and faster	vs	3.0 + A2DP
+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.	vs	MicroUSB 2.0
+HTML, XHTML, HTML5Advantage Better sites viewing on the internet	vs	HTML, XHTML, Flash player
180 grams (6.3 ounces)	vs	+116 grams (4.06 ounces)55% Lighter
Li-Ion: lithium-ion (Non removable)	vs	+Li-Ion: lithium-ion (Removable)Advantage Removable battery can be replaced easily
Type-C reversible connector	vs	+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores
Not supported	vs	+FM (RDS)Advantage The radio lets you listen to your songs and sports in general
Not supported	vs	+DLNAAdvantage With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.
Not supported	vs	+Gorilla GlassAdvantage Protection against scratches on the screen lets you carry your phone with your keys

21 Common items in both devices

Plastic body, glass front

Super AMOLED / Super AMOLED Plus

16 million

LED flash

Only digital zoom

PDAF: phase detection autofocus / Autofocus

BSI sensor

+14 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)	Galaxy S2 (GT-i9100 32GB)
Change model		Choose the model
Model	Galaxy M55 (SM-M556E/DS 128GB)	Galaxy S2 (GT-i9100 32GB)
Other model names	Galaxy M55 5G SM-M556E/Dual-SIM	Samsung Galaxy S2 i9100, Galaxy S II (SGS2)
Country or region available	(Europe), Russia	(Global, International)
Brand	Samsung	Samsung
Release date	3/28/2024	4/28/2012
Depth	7.8 millimeters (0.31 inches)	8.49 millimeters (0.33 inches)
Size (width x height)	76.5 x 163.9 millimeters (3.01 x 6.45 in)	66.1 x 125.3 millimeters (2.6 x 4.93 in)
Weight	180 grams (6.3 ounces)	116 grams (4.06 ounces)
Build, materials	Plastic body, glass front	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Galaxy M55 (SM-M556E/DS 128GB)	Galaxy S2 (GT-i9100 32GB)
Display type	Super AMOLED	Super AMOLED Plus
Screen size	6.7" inches	4.3" inches
Screen-to-body ratio	~86.4% (screen-to-body ratio)	~63.5% (screen-to-body ratio)
Display resolution	1080x2400 pixels (20:9)	480x800 pixels
Touchscreen	Capacitive Multitouch 10-points	Capacitive Multitouch 10-points
Pixel density (dot pitch)	393 PPI	217 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Gorilla Glass
Refresh rate	120Hz	feature not registered
Display features	Always-On Display	feature not registered
🤖 Operating System
	Galaxy M55 (SM-M556E/DS 128GB)	Galaxy S2 (GT-i9100 32GB)
System version	Android 14	Android 2.3.4 Gingerbread
Firmware update	Android 15	Android 4.1.2 Jelly Bean
User Interface	One UI 6.1 / 7.0	feature not registered
⚙️ Processor
	Galaxy M55 (SM-M556E/DS 128GB)	Galaxy S2 (GT-i9100 32GB)
Chipset	64bit: Qualcomm Snapdragon 7 Gen 1 (SM7450-AB) (4nm)	32bit: Samsung Exynos 4 Dual 4210 (45nm)
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)	Dual-core, 1 processor: 2x 1.2GHz ARM Cortex-A9 (Dual-core)
GPU graphical controller	Qualcomm Adreno 644 (443MHz)	ARM Mali-400 MP4 266Mhz
Performance (benchmark)	AnTuTu: 582102 (v10)	feature not registered
💽 Memory and storage
	Galaxy M55 (SM-M556E/DS 128GB)	Galaxy S2 (GT-i9100 32GB)
RAM memory	8GB LPDDR4X	1GB LPDDR2
Internal storage	128GB (105GB available) UFS 2.2	32GB (28GB available)
External storage	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)	Until 32GB microSD, microSDHC (dedicated slot)
📶 Mobile networks
	Galaxy M55 (SM-M556E/DS 128GB)	Galaxy S2 (GT-i9100 32GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot)	Not supported
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	1 slot (Single-SIM) Standard mini-SIM (2FF)
Maximum Download / Upload	3000/1024 Mbps	21/5.76 Mbps
Network technology	2G, 3G, 4G, 5G	2G, 3G
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 850/900/1900/2100
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	Not supported
Primary 5G network	SA/NSA/Sub6 (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78)	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+
Secondary 2G network	GSM 850/900/1800/1900	Not supported
Secondary 3G network	UMTS 850/900/1700/1900/2100	Not supported
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	Not supported
Secondary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6	Not supported
📷 Camera
	Galaxy M55 (SM-M556E/DS 128GB)	Galaxy S2 (GT-i9100 32GB)
Back camera (main camera)	(triple camera) 50 megapixels 8MP ultrawide f/2.2123° 2MP macro f/2.4	8 megapixels
Main camera resolution	8160x6120 pixels	3264x2448 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	Full HD (1920x1080) 30 fps
Flash	LED flash	LED flash
Focal aperture	f/1.8 (aperture)	f/2.6 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	1/1.56" inches	1/3.2" inches
Pixel size	1µm pixel	feature not registered
Autofocus	PDAF: phase detection autofocus	Autofocus
Touch focus	Supported	Supported
Image stabilization	OIS: Optical stabilization	EIS: Digital 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	Not supported
Camera extras	4K@30fps 1080p@30/60fps 720p@240fps (slow motion)	feature not registered
📸 Front camera
	Galaxy M55 (SM-M556E/DS 128GB)	Galaxy S2 (GT-i9100 32GB)
Front camera (secondary)	50 megapixels	2 megapixels
Front camera resolution	8160x6120 pixels	1600x1200 pixels
Video recording (secondary)	4K UHD (3840x2160)	VGA (640x480)
Front flash	Not supported	Not supported
Focal aperture	f/2.4 (aperture)	feature not registered
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
	Galaxy M55 (SM-M556E/DS 128GB)	Galaxy S2 (GT-i9100 32GB)
Loudspeaker	Stereo sound	Supported
Active noise cancellation	2 microphones	2 microphones or more
Radio	Not supported	FM (RDS)
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, XviD, MKV	MP4, H.264, H.263, DivX, XviD, WMV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, eAAC+, AC3, FLAC
🔌 Connectivity
	Galaxy M55 (SM-M556E/DS 128GB)	Galaxy S2 (GT-i9100 32GB)
USB	USB 2.0 Type-C, USB OTG On-The-Go	MicroUSB 2.0
Audio output	Type-C reversible connector	3.5mm jack
TV output	USB Type-C (reversible)	Micro-B USB MHL
Bluetooth	5.2 + A2DP/LE	3.0 + A2DP
WiFi	802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot	802.11 a/b/g/n [wifi4] (2.4GHz, 5GHz) WiFi Direct, hotspot
DLNA	Not supported	Supported
GPS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS	A-GPS, GeoTagging
NFC	Supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Galaxy M55 (SM-M556E/DS 128GB)	Galaxy S2 (GT-i9100 32GB)
Sensors	Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gyroscope Proximity sensor	Accelerometer Ambient light sensor Compass Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy M55 (SM-M556E/DS 128GB)	Galaxy S2 (GT-i9100 32GB)
Battery type	Li-Ion: lithium-ion (Non removable)	Li-Ion: lithium-ion (Removable)
Battery capacity	5000 mAh	1650 mAh
Charger, watts	45W Wired fast charging	Wired charging
Inductive / wireless charging	Not supported	feature not registered
Talk time autonomy	feature not registered	8.7 hours
Standby	feature not registered	600 hours (25 days)
➕ Other features
	Galaxy M55 (SM-M556E/DS 128GB)	Galaxy S2 (GT-i9100 32GB)
Call control	Voice dialing, Voice recorder, Voice commands	Voice dialing, Voice recorder, Voice commands
Messaging	SMS (T9), MMS, E-mail, Push mail	SMS (Swype), 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, Flash player
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Not supported	Not supported
Miscellaneous	• Colors: Dark Blue, Light Green	• Colors: Black, White, Pink • Samsung TouchWiz UI 4.0 • Java framework
☢️ Radiation rate
	Galaxy M55 (SM-M556E/DS 128GB)	Galaxy S2 (GT-i9100 32GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	0.16W/kg (head), 0.96W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	0.81W/kg (head), 1.18W/kg (body)	0.34W/kg (head)