Oppo Find X (128GB) vs Samsung Galaxy M55s (SM-M558B/DS 128GB)

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

5/20/2025 7:22 AM, updated: 6/9/2025 11:20 PM

Compare Samsung Galaxy M55s X Oppo Find X (128GB) 06Points

Specifications Compare Models Pictures

6.42"
AMOLED

1080x2340

16
MP

25mp

8GB
RAM

Octa-core

3730
mAh

(Non removable)

22Points Samsung Galaxy M55s (SM-M558B/DS 128GB) Compare Oppo Find X 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 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!

6 Advantages Oppo Find X (128GB)	vs	22 Advantages Samsung Galaxy M55s (SM-M558B/DS 128GB)
+2.8GHz 64bit Octa-core (10nm)1% More powerful processor, you can open your applications faster	vs	2.4GHz 64bit Octa-core (4nm)
+Aluminum frame, glass front/backAdvantage More resistant material	vs	Plastic body, glass front
+401 PPI2% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	393 PPI
+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light	vs	LED flash
+Face unlock 3DAdvantage Sensors help you use the device	vs	Face unlock 2D
+Gorilla Glass 5Advantage Protection against scratches on the screen lets you carry your phone with your keys	vs	Not supported
UFS 2.1	vs	+UFS 2.2Advantage Fastest write and read storage.
Not supported	vs	+Until 1TB microSD, microSDXCAdvantage More external storage for files using memory cards
186 grams (6.51 ounces)	vs	+180 grams (6.3 ounces)3% Lighter
9.4 millimeters (0.37 inches)	vs	+7.8 millimeters (0.31 inches)21% Thinner
AMOLED	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
60Hz	vs	+120Hz100% The display reproduces more frames per second because the frequency (Hertz) is higher, improves fluidity and tires your eyes less.
1080x2340 pixels	vs	+1080x2400 pixels3% Higher resolution screen
6.42"	vs	+6.7"4% Larger screen
(dual camera) 16MP + 20MP	vs	+(triple camera) 50MP + 8MP + 2MP67% Higher resolution main camera
1/2.6" inches	vs	+1/1.56" inches67% The larger sensor camera lets you take photos with better depth.
f/2.0 (aperture)	vs	+f/1.8 (aperture)11% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(front) 25MP	vs	+(front) 50MP101% 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 10	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) 1024 Mbps	vs	+(5G Sub6) 3000 Mbps193% Faster for surfing the internet and download files
Not supported	vs	+Fingerprint sensor (under display)Advantage Sensors help you use the device
3730 mAh	vs	+5000 mAh34% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
20W	vs	+45W125% 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.
Mono sound (not stereo)	vs	+Stereo soundAdvantage Better sound quality for listening to music or clearer hands-free calls
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
5.0 + A2DP/LE	vs	+5.2 + A2DP/LEAdvantage Bluetooth 5.2 + A2DP/LE is newer and faster

27 Common items in both devices

8GB LPDDR4X

128GB (110GB available) / 128GB (105GB available)

16 million

Only digital zoom

PDAF: phase detection autofocus

OIS: Optical stabilization

BSI sensor

+20 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 Find X (128GB)	Galaxy M55s (SM-M558B/DS 128GB)
Change model		Choose the model
Model	Find X (128GB)	Galaxy M55s (SM-M558B/DS 128GB)
Other model names	BBK Oppo Find X PAFM00, PAFT00	Galaxy M55s 5G SM-M558B/Dual-SIM
Country or region available	(Global, International), China, Hong Kong	Bangladesh, India
Brand	Oppo	Samsung
Release date	7/1/2018	9/26/2024, Announced: 9/24/2024
Depth	9.4 millimeters (0.37 inches)	7.8 millimeters (0.31 inches)
Size (width x height)	74.2 x 156.7 millimeters (2.92 x 6.17 in)	76.5 x 163.9 millimeters (3.01 x 6.45 in)
Weight	186 grams (6.51 ounces)	180 grams (6.3 ounces)
Build, materials	Aluminum frame, glass front/back Back: Gorilla Glass 5	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Oppo Find X (128GB)	Galaxy M55s (SM-M558B/DS 128GB)
Display type	AMOLED	Super AMOLED
Screen size	6.42" inches	6.7" inches
Screen-to-body ratio	~87% (screen-to-body ratio)	~86.4% (screen-to-body ratio)
Display resolution	1080x2340 pixels (19.5:9)	1080x2400 pixels (20:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch 10-points
Pixel density (dot pitch)	401 PPI	393 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 5	Not supported
Refresh rate	60Hz	120Hz
Display features	Not supported	Always-On Display
🤖 Operating System
	Oppo Find X (128GB)	Galaxy M55s (SM-M558B/DS 128GB)
System version	Android 8.1 Oreo	Android 14
Firmware update	Android 10	Android 15
User Interface	ColorOS 5.1 / 7.0	One UI 6.1 / 7.0
⚙️ Processor
	Oppo Find X (128GB)	Galaxy M55s (SM-M558B/DS 128GB)
Chipset	64bit: Qualcomm Snapdragon 845 (SDM845) (10nm)	64bit: Qualcomm Snapdragon 7 Gen 1 (SM7450-AB) (4nm)
CPU	Octa-core, 2 processors: 4x 2.8GHz Kryo 385 Gold (Quad-core) 4x 1.7GHz Kryo 385 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 630 (710MHz)	Qualcomm Adreno 644 (443MHz)
Performance (benchmark)	feature not registered	AnTuTu: 582102 (v10)
💽 Memory and storage
	Oppo Find X (128GB)	Galaxy M55s (SM-M558B/DS 128GB)
RAM memory	8GB LPDDR4X	8GB LPDDR4X
Internal storage	128GB (110GB available) UFS 2.1	128GB (105GB available) UFS 2.2
External storage	Not supported	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)
📶 Mobile networks
	Oppo Find X (128GB)	Galaxy M55s (SM-M558B/DS 128GB)
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	1024/150 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 Cat16 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 32, 66) TD-LTE (34, 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 Find X (128GB)	Galaxy M55s (SM-M558B/DS 128GB)
Back camera (main camera)	(dual camera) 16 megapixels 20MP f/2.01/2.8"1.0µm	(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	Dual-LED flash	LED flash
Focal aperture	f/2.0 (aperture)	f/1.8 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	1/2.6" inches	1/1.56" inches
Pixel size	1.22µm 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 on both cameras
Camera extras	feature not registered	4K@30fps 1080p@30/60fps 720p@240fps (slow motion)
📸 Front camera
	Oppo Find X (128GB)	Galaxy M55s (SM-M558B/DS 128GB)
Front camera (secondary)	25 megapixels *Motorized pop-up camera (slider)	50 megapixels
Front camera resolution	5760x4320 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 Find X (128GB)	Galaxy M55s (SM-M558B/DS 128GB)
Loudspeaker	Mono sound (not stereo)	Stereo sound
Active noise cancellation	2 microphones	2 microphones
Radio	Not supported	Not supported
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, DivX, XviD	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, OGG, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Oppo Find X (128GB)	Galaxy M55s (SM-M558B/DS 128GB)
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 reversible connector	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 [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, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS
NFC	Supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Oppo Find X (128GB)	Galaxy M55s (SM-M558B/DS 128GB)
Sensors	Accelerometer Ambient light sensor Compass Face unlock 3D Gyroscope Hall effect Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (under display) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Oppo Find X (128GB)	Galaxy M55s (SM-M558B/DS 128GB)
Battery type	LiPo: li-ion polymer (Non removable)	Li-Ion: lithium-ion (Non removable)
Battery capacity	3730 mAh	5000 mAh
Charger, watts	20W Wired fast charging VOOC 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
	Oppo Find X (128GB)	Galaxy M55s (SM-M558B/DS 128GB)
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: Bordeaux Red, Glacier Blue	• Colors: Thunder Black, Coral Green
☢️ Radiation rate
	Oppo Find X (128GB)	Galaxy M55s (SM-M558B/DS 128GB)
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