Samsung Galaxy M55s (SM-M558B/DS 128GB) vs Oppo Find X3 Pro (256GB/12GB)

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

5/20/2025 7:22 AM, updated: 5/20/2025 7:36 AM

Compare Oppo Find X3 Pro X Samsung Galaxy M55s (SM-M558B/DS 128GB) 10Points

Specifications Compare Models Pictures

6.7"
AMOLED

1080x2400

50
MP

50mp

8GB
RAM

Octa-core

5000
mAh

(Non removable)

14Points Oppo Find X3 Pro (256GB/12GB) Compare Samsung Galaxy M55s X

Specifications Compare Models Pictures

6.7"
AMOLED

1440x3216

50
MP

32mp

12GB
RAM

Octa-core

4500
mAh

(Non removable)

What's the better phone? Oppo Find X3 Pro (256GB/12GB)

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 Samsung Galaxy M55s (SM-M558B/DS 128GB)	vs	14 Advantages Oppo Find X3 Pro (256GB/12GB)
+2.4GHz 64bit Octa-core (4nm)2% More powerful processor, you can open your applications faster	vs	2.84GHz 64bit Octa-core (5nm)
+Until 1TB microSD, microSDXCAdvantage More external storage for files using memory cards	vs	Not supported
+180 grams (6.3 ounces)7% Lighter	vs	193 grams (6.76 ounces)
+7.8 millimeters (0.31 inches)6% Thinner	vs	8.26 millimeters (0.33 inches)
+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid	vs	AMOLED
+(front) 50MP56% Higher resolution secondary camera to take pictures and selfies	vs	(front) 32MP
+(front) 4K UHD (3840x2160)3 times More image quality for recording videos with the secondary camera	vs	(front) Full HD (1920x1080)
+Android 15Advantage Android 15 is newer and safer	vs	Android 11
+(5G Sub6) 3000 Mbps50% Faster for surfing the internet and download files	vs	(5G SA/NSA) 2000 Mbps
+5000 mAh11% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	4500 mAh
8GB LPDDR4X	vs	+12GB LPDDR550% More RAM memory. Typically more responsive and better for multitasking.
128GB (105GB available)	vs	+256GB (228GB available)117% More internal storage for applications and files
UFS 2.2	vs	+UFS 3.1Advantage Fastest write and read storage.
Plastic body, glass front	vs	+Aluminum frame, glass front/backAdvantage More resistant material
Not supported	vs	+HDR10+Advantage The HDR10+ display provides vibrant colors and more details
16 million	vs	+1 billion62 times More colors on the screen is better quality images and videos
1080x2400 pixels	vs	+1440x3216 pixels79% Higher resolution screen
393 PPI	vs	+526 PPI34% Crisper display of text, images and videos because it has more pixels per inch (ppi)
(triple camera) 50MP + 8MP + 2MP	vs	+(quad camera) 50MP + 13MP + 50MP + 3MP93% Higher resolution main camera
45W	vs	+65W44% 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.
Not supported	vs	+Qi Wireless charging (Qi/WPC)Advantage Wireless charging is another way to charge the battery.
USB 2.0 Type-C, USB OTG On-The-Go	vs	+USB 3.1 Type-C, USB OTG On-The-GoAdvantage Newer and faster USB version for transferring photos, mp3 or data.
Not supported	vs	+Gorilla Glass 5Advantage Protection against scratches on the screen lets you carry your phone with your keys
Not supported	vs	+IP68 certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example

34 Common items in both devices

120Hz

6.7"

LED flash

Only digital zoom

PDAF: phase detection autofocus

OIS: Optical stabilization

BSI sensor

+27 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 M55s (SM-M558B/DS 128GB)	Oppo Find X3 Pro (256GB/12GB)
Change model		Choose the model
Model	Galaxy M55s (SM-M558B/DS 128GB)	Find X3 Pro (256GB/12GB)
Other model names	Galaxy M55s 5G SM-M558B/Dual-SIM	OPPO Find X3 Pro 5G (CPH2173, PEEM00)
Country or region available	Bangladesh, India	(Global, International)
Brand	Samsung	Oppo
Release date	9/26/2024, Announced: 9/24/2024	3/19/2021, Announced: 3/11/2021
Depth	7.8 millimeters (0.31 inches)	8.26 millimeters (0.33 inches)
Size (width x height)	76.5 x 163.9 millimeters (3.01 x 6.45 in)	74.4 x 163.6 millimeters (2.93 x 6.44 in)
Weight	180 grams (6.3 ounces)	193 grams (6.76 ounces)
Build, materials	Plastic body, glass front	Aluminum frame, glass front/back
Protection against water and others	Not supported	IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant
📲 Display
	Galaxy M55s (SM-M558B/DS 128GB)	Oppo Find X3 Pro (256GB/12GB)
Display type	Super AMOLED	AMOLED
Screen size	6.7" inches	6.7" inches
Screen-to-body ratio	~86.4% (screen-to-body ratio)	~88.7% (screen-to-body ratio)
Display resolution	1080x2400 pixels (20:9)	1440x3216 pixels (20:9)
Touchscreen	Capacitive Multitouch 10-points	Capacitive Multitouch
Pixel density (dot pitch)	393 PPI	526 PPI
Colors	16 million	1 billion
Scratch-resistant glass	Not supported	Gorilla Glass 5
Refresh rate	120Hz	120Hz
Display features	Always-On Display	500nits[typ], 1300nits[peak] HDR10+ BT.2020
🤖 Operating System
	Galaxy M55s (SM-M558B/DS 128GB)	Oppo Find X3 Pro (256GB/12GB)
System version	Android 14	Android 11
Firmware update	Android 15	feature not registered
User Interface	One UI 6.1 / 7.0	ColorOS 11.2
⚙️ Processor
	Galaxy M55s (SM-M558B/DS 128GB)	Oppo Find X3 Pro (256GB/12GB)
Chipset	64bit: Qualcomm Snapdragon 7 Gen 1 (SM7450-AB) (4nm)	64bit: Qualcomm Snapdragon 888 (SM8350) (5nm)
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)	Octa-core, 3 processors: 1x 2.84GHz Kryo 680 (Single-core) 3x 2.42GHz Kryo 680 (Triple-core) 4x 1.8GHz Kryo 680 (Quad-core)
GPU graphical controller	Qualcomm Adreno 644 (443MHz)	Qualcomm Adreno 660 (840MHz)
Performance (benchmark)	AnTuTu: 582102 (v10)	AnTuTu: 656467 (v8) Geekbench: 3316 (v5.1) GFXBench: 33fps (ES 3.1 onscreen)
💽 Memory and storage
	Galaxy M55s (SM-M558B/DS 128GB)	Oppo Find X3 Pro (256GB/12GB)
RAM memory	8GB LPDDR4X	12GB LPDDR5
Internal storage	128GB (105GB available) UFS 2.2	256GB (228GB available) UFS 3.1
External storage	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)	Not supported
📶 Mobile networks
	Galaxy M55s (SM-M558B/DS 128GB)	Oppo Find X3 Pro (256GB/12GB)
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
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	3000/1024 Mbps	2000/1024 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	CDMA 800, GSM 850/900/1800/1900
Primary 3G network	UMTS 850/900/1700/1900/2100	CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100
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	LTE Cat20 VoLTE Global version: LTE (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (34, 38, 39, 40, 41, 42) China version: LTE (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 66) TD-LTE (34, 38, 39, 40, 41, 42)
Primary 5G network	SA/NSA/Sub6 (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78)	SA/NSA Global version: (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 77, 78, 79) China version: (1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 40, 41, 66, 77, 78, 79)
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA
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 Cat18 (1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 25, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE	LTE Cat20 VoLTE Global version: LTE (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (34, 38, 39, 40, 41, 42) China version: LTE (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 66) TD-LTE (34, 38, 39, 40, 41, 42)
Secondary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
📷 Camera
	Galaxy M55s (SM-M558B/DS 128GB)	Oppo Find X3 Pro (256GB/12GB)
Back camera (main camera)	(triple camera) 50 megapixels 8MP ultrawide f/2.2123° 2MP macro f/2.4	(quad camera) 50 megapixels 13MP telephoto f/2.452mm2x-optical-zoomPDAF 50MP ultrawide f/2.216mm110°1/1.56"1.0µmPDAF 3MP microscope f/3.0AFring-flash60x-zoom
Main camera resolution	8160x6120 pixels	8160x6120 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	4K UHD (3840x2160) 60 fps
Flash	LED flash	LED flash
Focal aperture	f/1.8 (aperture)	f/1.8 (aperture)
Focal length	feature not registered	26mm (lens)
Sensor size	1/1.56" inches	1/1.56" inches
Pixel size	1µm pixel	1µm pixel
Autofocus	PDAF: phase detection autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	OIS: 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	Supported	Supported
HDR	HDR photo on both cameras	HDR photo/video on both cameras
Camera extras	4K@30fps 1080p@30/60fps 720p@240fps (slow motion)	1080p@240fps Sony IMX766 sensor
📸 Front camera
	Galaxy M55s (SM-M558B/DS 128GB)	Oppo Find X3 Pro (256GB/12GB)
Front camera (secondary)	50 megapixels	32 megapixels
Front camera resolution	8160x6120 pixels	6528x4896 pixels
Video recording (secondary)	4K UHD (3840x2160)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.4 (aperture)	f/2.4 (aperture)
Focal length	feature not registered	26mm (lens)
Sensor size	feature not registered	1/2.8" inches
Pixel size	feature not registered	0.8µm pixel
🔉 Sound and multimedia
	Galaxy M55s (SM-M558B/DS 128GB)	Oppo Find X3 Pro (256GB/12GB)
Loudspeaker	Stereo sound	Stereo sound
Active noise cancellation	2 microphones	2 microphones or more
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
	Galaxy M55s (SM-M558B/DS 128GB)	Oppo Find X3 Pro (256GB/12GB)
USB	USB 2.0 Type-C, USB OTG On-The-Go	USB 3.1 Type-C, USB OTG On-The-Go
Audio output	Type-C reversible connector	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	Not supported	Not supported
🧭 Sensors
	Galaxy M55s (SM-M558B/DS 128GB)	Oppo Find X3 Pro (256GB/12GB)
Sensors	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (under display) Gyroscope Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (under display) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy M55s (SM-M558B/DS 128GB)	Oppo Find X3 Pro (256GB/12GB)
Battery type	Li-Ion: lithium-ion (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	5000 mAh	4500 mAh
Charger, watts	45W Wired fast charging	65W Wired fast charging Reverse charging by cable USB Power Delivery 3.0
Inductive / wireless charging	Not supported	30W Qi Wireless charging (Qi/WPC) 10W Reverse wireless charging
Talk time autonomy	feature not registered	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Galaxy M55s (SM-M558B/DS 128GB)	Oppo Find X3 Pro (256GB/12GB)
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: Thunder Black, Coral Green	• Colors: Gloss Black, Blue, White, Cosmic Mocha, Mars Edition, Photographer Edition
☢️ Radiation rate
	Galaxy M55s (SM-M558B/DS 128GB)	Oppo Find X3 Pro (256GB/12GB)
SAR 1.6W/kg (USA, Mexico, etc.)	0.93W/kg (head)	feature not registered
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered