Oppo R11s vs Samsung Galaxy M55 (SM-M556B/DS 256GB/8GB)

Share page: Facebook Twitter WhatsApp Share page:

Side by side comparison between Oppo R11s vs Samsung Galaxy M55 phones, differences, pros, cons and full specifications. What's the better?

5/19/2025 9:09 AM, updated: 5/20/2025 7:30 AM

Compare Samsung Galaxy M55 X Oppo R11s 08Points

Specifications Compare Models Pictures

6.01"
AMOLED

1080x2160

16
MP

20mp

4GB
RAM

Octa-core

3205
mAh

(Non removable)

23Points Samsung Galaxy M55 (SM-M556B/DS 256GB/8GB) Compare Oppo R11s 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 256GB/8GB)

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!

8 Advantages Oppo R11s	vs	23 Advantages Samsung Galaxy M55 (SM-M556B/DS 256GB/8GB)
+153 grams (5.36 ounces)18% Lighter	vs	180 grams (6.3 ounces)
+7.1 millimeters (0.28 inches)10% Thinner	vs	7.8 millimeters (0.31 inches)
+Aluminum body, glass frontAdvantage More resistant material	vs	Plastic body, glass front
+402 PPI2% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	393 PPI
+Digital and optical zoomAdvantage The zoom allows for better focus and approach to take pictures	vs	Only digital zoom
+f/1.7 (aperture)6% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.	vs	f/1.8 (aperture)
+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores	vs	Type-C reversible connector
+Gorilla Glass 5Advantage Protection against scratches on the screen lets you carry your phone with your keys	vs	Not supported
2.2GHz 64bit Octa-core	vs	+2.4GHz 64bit Octa-core (4nm)16% More powerful processor, you can open your applications faster
4GB LPDDR4X	vs	+8GB LPDDR4X100% More RAM memory. Typically more responsive and better for multitasking.
64GB (50GB available)	vs	+256GB (233GB available)4 times More internal storage for applications and files
eMMC 5.1	vs	+UFS 2.2Advantage Fastest write and read storage.
Until 256GB microSD, microSDXC	vs	+Until 1TB microSD, microSDXC3 times More external storage for files using memory cards
AMOLED	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
1080x2160 pixels	vs	+1080x2400 pixels11% Higher resolution screen
6.01"	vs	+6.7"11% Larger screen
(dual camera) 16MP + 20MP	vs	+(triple camera) 50MP + 8MP + 2MP67% Higher resolution main camera
EIS: Digital stabilization	vs	+OIS: Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video
Not supported	vs	+BSI sensorAdvantage The BSI sensor allows the entry of more light generating photos with more detail and brightness
1/2.8" inches	vs	+1/1.56" inches79% The larger sensor camera lets you take photos with better depth.
(front) 20MP	vs	+(front) 50MP150% 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 7.1.1 Nougat	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
3205 mAh	vs	+5000 mAh56% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
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
4.2 + A2DP	vs	+5.2 + A2DP/LEAdvantage Bluetooth 5.2 + A2DP/LE is newer and faster
Not supported	vs	+NFCAdvantage NFC allows you to make payments by approach quickly and securely
MicroUSB 2.0	vs	+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.

22 Common items in both devices

16 million

LED flash

PDAF: phase detection autofocus

HDR photo on both cameras

4K UHD (3840x2160)

Capacitive

Multitouch

+15 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
	Oppo R11s	Galaxy M55 (SM-M556B/DS 256GB/8GB)
Change model		Choose the model
Model	Oppo R11s	Galaxy M55 (SM-M556B/DS 256GB/8GB)
Other model names	Oppo R11s (4GB RAM), Oppo R11st	Galaxy M55 5G SM-M556B/Dual-SIM
Country or region available	China, Hong Kong, Singapore, Taiwan, (Global, International)	(Global, International), Brazil, Colombia, Mexico
Brand	Oppo	Samsung
Release date	11/1/2017	3/28/2024
Depth	7.1 millimeters (0.28 inches)	7.8 millimeters (0.31 inches)
Size (width x height)	75.5 x 155.1 millimeters (2.97 x 6.11 in)	76.5 x 163.9 millimeters (3.01 x 6.45 in)
Weight	153 grams (5.36 ounces)	180 grams (6.3 ounces)
Build, materials	Aluminum body, glass front	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Oppo R11s	Galaxy M55 (SM-M556B/DS 256GB/8GB)
Display type	AMOLED	Super AMOLED
Screen size	6.01" inches	6.7" inches
Screen-to-body ratio	~79.6% (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)	402 PPI	393 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 5	Not supported
Refresh rate	feature not registered	120Hz
Display features	feature not registered	Always-On Display
🤖 Operating System
	Oppo R11s	Galaxy M55 (SM-M556B/DS 256GB/8GB)
System version	Android 7.1.1 Nougat	Android 14
Firmware update	feature not registered	Android 15
User Interface	feature not registered	One UI 6.1 / 7.0
⚙️ Processor
	Oppo R11s	Galaxy M55 (SM-M556B/DS 256GB/8GB)
Chipset	64bit: Qualcomm Snapdragon 660 SDM660 (14nm)	64bit: Qualcomm Snapdragon 7 Gen 1 (SM7450-AB) (4nm)
CPU	Octa-core, 2 processors: 4x 2.2GHz Kryo 260 Gold (Quad-core) 4x 1.8GHz Kryo 260 Silver (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 512 650Mhz	Qualcomm Adreno 644 (443MHz)
Performance (benchmark)	feature not registered	AnTuTu: 582102 (v10)
💽 Memory and storage
	Oppo R11s	Galaxy M55 (SM-M556B/DS 256GB/8GB)
RAM memory	4GB LPDDR4X	8GB LPDDR4X
Internal storage	64GB (50GB available) eMMC 5.1	256GB (233GB available) UFS 2.2
External storage	Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)
📶 Mobile networks
	Oppo R11s	Galaxy M55 (SM-M556B/DS 256GB/8GB)
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 (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	600/150 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	CDMA 800, GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1700/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat12 (Bands 1,2,3,4,5,7,8,20,28) TD-LTE (Bands 38,39,40,41)	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
	Oppo R11s	Galaxy M55 (SM-M556B/DS 256GB/8GB)
Back camera (main camera)	(dual camera) 16 megapixels 20MP f/1.71/2.8"	(triple camera) 50 megapixels 8MP ultrawide f/2.2123° 2MP macro f/2.4
Main camera resolution	4608x3456 pixels	8160x6120 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	4K UHD (3840x2160) 30 fps
Flash	LED flash	LED flash
Focal aperture	f/1.7 (aperture)	f/1.8 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	1/2.8" inches	1/1.56" inches
Pixel size	1.12µm 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	Digital and optical zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not 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
	Oppo R11s	Galaxy M55 (SM-M556B/DS 256GB/8GB)
Front camera (secondary)	20 megapixels	50 megapixels
Front camera resolution	5472x3648 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
	Oppo R11s	Galaxy M55 (SM-M556B/DS 256GB/8GB)
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	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, OGG, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Oppo R11s	Galaxy M55 (SM-M556B/DS 256GB/8GB)
USB	MicroUSB 2.0	USB 2.0 Type-C, USB OTG On-The-Go
Audio output	3.5mm jack	Type-C reversible connector
TV output	Not supported	USB Type-C (reversible)
Bluetooth	4.2 + A2DP	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	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS
NFC	Not supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Oppo R11s	Galaxy M55 (SM-M556B/DS 256GB/8GB)
Sensors	Accelerometer Ambient light sensor Compass Fingerprint sensor Gyroscope Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (under display) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Oppo R11s	Galaxy M55 (SM-M556B/DS 256GB/8GB)
Battery type	LiPo: li-ion polymer (Non removable)	Li-Ion: lithium-ion (Non removable)
Battery capacity	3205 mAh	5000 mAh
Charger, watts	Wired 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
	Oppo R11s	Galaxy M55 (SM-M556B/DS 256GB/8GB)
Call control	Voice dialing, Voice recorder	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: Champagne, Black, Red • USB OTG On-The-Go • Aluminum body • ColorOS 3.2 • Facial recognition • Silicone case included • Fast battery charging • VOOC Flash Charge 5V/4A=20W • Miracast	• Colors: Dark Blue, Light Green
☢️ Radiation rate
	Oppo R11s	Galaxy M55 (SM-M556B/DS 256GB/8GB)
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)