Oppo Find X (128GB) vs Samsung Galaxy M40 (SM-M405FN/DS)

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Side by side comparison between Oppo Find X vs Samsung Galaxy M40 phones, differences, pros, cons and full specifications. What's the better?

6/20/2019 3:09 PM, updated: 6/9/2025 11:20 PM

Compare Samsung Galaxy M40 X Oppo Find X (128GB) 15Points

Specifications Compare Models Pictures

6.42"
AMOLED

1080x2340

16
MP

25mp

8GB
RAM

Octa-core

3730
mAh

(Non removable)

08Points Samsung Galaxy M40 (SM-M405FN/DS) Compare Oppo Find X X

Specifications Compare Models Pictures

6.3"
PLS

1080x2340

32
MP

16mp

6GB
RAM

Octa-core

3500
mAh

(Non removable)

What's the better phone? Oppo Find X (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!

15 Advantages Oppo Find X (128GB)	vs	8 Advantages Samsung Galaxy M40 (SM-M405FN/DS)
+2.8GHz 64bit Octa-core (10nm)34% More powerful processor, you can open your applications faster	vs	2GHz 64bit Octa-core
+8GB LPDDR4X33% More RAM memory. Typically more responsive and better for multitasking.	vs	6GB LPDDR4X
+UFS 2.1Advantage Fastest write and read storage.	vs	eMMC 5.1
+Aluminum frame, glass front/backAdvantage More resistant material	vs	Plastic body, glass front
+AMOLEDAdvantage AMOLED display is brighter and more vivid	vs	TFT PLS
+6.42"2% Larger screen	vs	6.3"
+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light	vs	LED flash
+OIS: Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video	vs	EIS: Digital stabilization
+BSI sensorAdvantage The BSI sensor allows the entry of more light generating photos with more detail and brightness	vs	Not supported
+(front) 25MP56% Higher resolution secondary camera to take pictures and selfies	vs	(front) 16MP
+(4G LTE-A) 1024 Mbps156% Faster for surfing the internet and download files	vs	(4G LTE-A) 400 Mbps
+Ambient light sensorAdvantage Sensors help you use the device	vs	Not supported
+Face unlock 3DAdvantage Sensors help you use the device	vs	Face unlock 2D
+3730 mAh7% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	3500 mAh
+20W33% 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.	vs	15W
Not supported	vs	+Until 1TB microSD, microSDXCAdvantage More external storage for files using memory cards
186 grams (6.51 ounces)	vs	+168 grams (5.88 ounces)11% Lighter
9.4 millimeters (0.37 inches)	vs	+7.9 millimeters (0.31 inches)19% Thinner
401 PPI	vs	+409 PPI2% Crisper display of text, images and videos because it has more pixels per inch (ppi)
(dual camera) 16MP + 20MP	vs	+(triple camera) 32MP + 8MP + 5MP25% Higher resolution main camera
f/2.0 (aperture)	vs	+f/1.7 (aperture)18% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
Not supported	vs	+Fingerprint sensor (rear-mounted)Advantage Sensors help you use the device
Not supported	vs	+FMAdvantage The radio lets you listen to your songs and sports in general

30 Common items in both devices

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

16 million

1080x2340 pixels

Only digital zoom

PDAF: phase detection autofocus

HDR photo on both cameras

4K UHD (3840x2160)

+23 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 M40 (SM-M405FN/DS)
Change model		Choose the model
Model	Find X (128GB)	Galaxy M40 (SM-M405FN/DS)
Other model names	BBK Oppo Find X PAFM00, PAFT00	Galaxy M40 SM-M405FN/Dual-Sim (128GB + 6GB RAM)
Country or region available	(Global, International), China, Hong Kong	(Europe), (Global, International)
Brand	Oppo	Samsung
Release date	7/1/2018	6/11/2019
Depth	9.4 millimeters (0.37 inches)	7.9 millimeters (0.31 inches)
Size (width x height)	74.2 x 156.7 millimeters (2.92 x 6.17 in)	73.9 x 155.3 millimeters (2.91 x 6.11 in)
Weight	186 grams (6.51 ounces)	168 grams (5.88 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 M40 (SM-M405FN/DS)
Display type	AMOLED	TFT PLS
Screen size	6.42" inches	6.3" inches
Screen-to-body ratio	~87% (screen-to-body ratio)	~84.9% (screen-to-body ratio)
Display resolution	1080x2340 pixels (19.5:9)	1080x2340 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	401 PPI	409 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 5	Gorilla Glass 3
Refresh rate	60Hz	feature not registered
Display features	Not supported	feature not registered
🤖 Operating System
	Oppo Find X (128GB)	Galaxy M40 (SM-M405FN/DS)
System version	Android 8.1 Oreo	Android 9.0 Pie
Firmware update	Android 10	Android 10
User Interface	ColorOS 5.1 / 7.0	feature not registered
⚙️ Processor
	Oppo Find X (128GB)	Galaxy M40 (SM-M405FN/DS)
Chipset	64bit: Qualcomm Snapdragon 845 (SDM845) (10nm)	64bit: Qualcomm Snapdragon 675 SDM675 (11nm)
CPU	Octa-core, 2 processors: 4x 2.8GHz Kryo 385 Gold (Quad-core) 4x 1.7GHz Kryo 385 Silver (Quad-core)	Octa-core, 2 processors: 2x 2GHz Kryo 460 Gold (Dual-core) 6x 1.7GHz Kryo 460 Silver (Hexa-core)
GPU graphical controller	Qualcomm Adreno 630 (710MHz)	Qualcomm Adreno 612 845Mhz
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Oppo Find X (128GB)	Galaxy M40 (SM-M405FN/DS)
RAM memory	8GB LPDDR4X	6GB LPDDR4X
Internal storage	128GB (110GB available) UFS 2.1	128GB (105GB available) eMMC 5.1
External storage	Not supported	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)
📶 Mobile networks
	Oppo Find X (128GB)	Galaxy M40 (SM-M405FN/DS)
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	400/50 Mbps
Network technology	2G, 3G, 4G	2G, 3G, 4G
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 850/900/1900/2100
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 Cat6 (Bands 1, 3, 5, 8, 20) TD-LTE (Bands 40, 41)
Primary 5G network	Not supported	Not supported
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+, LTE, LTE-A
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS, EDGE	GPRS, EDGE
📷 Camera
	Oppo Find X (128GB)	Galaxy M40 (SM-M405FN/DS)
Back camera (main camera)	(dual camera) 16 megapixels 20MP f/2.01/2.8"1.0µm	(triple camera) 32 megapixels 8MP ultrawide f/2.212mm1.12µmPDAF 5MP depth f/2.2
Main camera resolution	4608x3456 pixels	6528x4896 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/1.7 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	1/2.6" inches	feature not registered
Pixel size	1.22µm pixel	0.8µm pixel
Autofocus	PDAF: phase detection autofocus	PDAF: phase detection 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	Not supported
HDR	HDR photo on both cameras	HDR photo on both cameras
Camera extras	feature not registered	feature not registered
📸 Front camera
	Oppo Find X (128GB)	Galaxy M40 (SM-M405FN/DS)
Front camera (secondary)	25 megapixels *Motorized pop-up camera (slider)	16 megapixels
Front camera resolution	5760x4320 pixels	4608x3456 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.0 (aperture)	f/2.0 (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 M40 (SM-M405FN/DS)
Loudspeaker	Mono sound (not stereo)	Supported
Active noise cancellation	2 microphones	2 microphones or more
Radio	Not supported	FM
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 M40 (SM-M405FN/DS)
USB	USB 2.0 Type-C, USB OTG On-The-Go	USB 2.0 Type-C reversible connector
Audio output	Type-C reversible connector	Type-C reversible connector
TV output	USB Type-C (reversible)	Not supported
Bluetooth	5.0 + A2DP/LE	5.0 + 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 [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Oppo Find X (128GB)	Galaxy M40 (SM-M405FN/DS)
Sensors	Accelerometer Ambient light sensor Compass Face unlock 3D Gyroscope Hall effect Proximity sensor	Accelerometer Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Oppo Find X (128GB)	Galaxy M40 (SM-M405FN/DS)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	3730 mAh	3500 mAh
Charger, watts	20W Wired fast charging VOOC 3.0	15W Wired fast charging
Inductive / wireless charging	Not supported	feature not registered
Talk time autonomy	feature not registered	29 hours (1.2 days)
Standby	feature not registered	feature not registered
➕ Other features
	Oppo Find X (128GB)	Galaxy M40 (SM-M405FN/DS)
Call control	Voice dialing, Voice recorder	Voice dialing, Voice recorder
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: Midnight Blue, Sweater Blue • One UI • Dolby Atmos sound • Slow motion 240fps
☢️ Radiation rate
	Oppo Find X (128GB)	Galaxy M40 (SM-M405FN/DS)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	feature not registered
SAR 2W/kg (Europe, UK, etc.)	feature not registered	0.274W/kg (head), 1.17W/kg (body)